White to move. How should White proceed?
1k1r1r2/p2q4/B2p1p1b/2p1pn1p/Q2P2pP/5R2/PP4P1/6K1 w – – 0 1
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1 Rb3+,Ka8 2 Bb5,Q whatever 3 Bc6+ That should do,i guess.
1.Qb3+ Ka8 2.Qd5+ Kb8 3.Rb3+ Kc7 4.Rb7+ Kc8 5.Rxa7+ Kb8 6.Qa8 mate !
1.Rb3+ Ka8
2.Bb5 Qb7
3.Bc6 Rdb8
4.Bxb7 Rxb7
5.Qc6 Rff7
6.Qe8+ Rb8
7.Rxb8#
***White WON
– From MR KO (Malaysian)
Rb3!, Ka8
Bb5!
1. Rb3+ Ka8 (only move. Other moves die faster)
2. Bb5 aiming at Bc6
Rather obvious:
1. Qb3+ Ka8 (Kc7 Qb7#)
2. Qc5+ Kb8
3. Rb3+ and black is finished.
Qb3+ Ka8
Qd5+ Kb8
Rb3+ Kc+
Qb7#
1. Qb3+ (a) Ka8
2. Qd5+ Kb8
3. Rb3+ Qb7
4. QxQ#
1. … (b) Kc7
2. Qb7#
Mark
1. Qb3+ Ka8
2. Qd5+ Kb8
3. Rb3+ Kc7
4. Qb7 X
White can draw, even a rook and knight down, with Rb3, but I don’t see a win with that line:
1. Rb3 Kc7??
2. Rb7 Kc8
3. Rd7 Kb8
4. Qb5 Ka8
5. Qb7# but with 1. …Ka8 black draws:
1. …..Ka8!
2. Bb5
Here, Bb5 is the only move to not lose, in my opinion. Continuing:
2. …..Qb7 (Be3 is ok, too)
3. Bc6
Again, an only move, I think. Continuing:
3. …..Rf7 (again, Be3 ok)
4. Bb7
Here, Qa6 bringing another piece to bear on the pinned queen is no better: [4.Qa6 Be3 5.Kh1 Rb8 6.de5 fe5 7.Bb7 Rfb7 8.Rb7 Rb7 9.Qc6 and white will be lucky to not lose in this position- he is down in material]. Continuing:
4. …..Rb7
5. Qc6 Be3
6. Kf1 Rb8
And, again, white will be the one stuggling to hold a draw.
The key weakness in the black position is the a8 to d5 diagonal. The black queen controls c6, and with the king, controls b7, but she has no control of d5, nor b7 if the king is on c7. With this in mind, the obvious first move for white, if he is to win, is to play
1. Qb3! Ka8 (Kc7 2.Qb7#(
2. Qd5 Kb8
And, now, Rb3 is a hammer- white is a move ahead of where he was in the 1.Rb3 line. Continuing:
3. Rb3 and mate comes on one of the next two moves.
1 Qb3+ Ka8
2 Qd5+ Kb8
3 Rb3+ Kc7
Yes, giving up the Queen delays it by one move.
4 Qb7#
Interestingly, White could remove her Rook and still draw:
1 Qb3+ Ka8
2 Qd5+ Kb8
3 Qb3+
And White has a perpetual.
Qb3+ Ka8 Qd5+ Kb8 Rb3+ and mate soon follows.
1.Qb3 Ka8 (1..Kc7 2.Qb7#)
2.Qd5+! Kb8 (only other option is to sacrific the queen, which is no good)
3.Rb3+ Kc7 (or queen sac, this loses too)
4.Qb7#
With a lovely queen manoeuvre white can checkmaie b;ack quickly.
1. Qb3+!, Ka8 (1., Kc7. 2.@b7 mate)
2. Qd5+!, Kb8
3. Rb3+ and white mates in maximum two more moves.
Erik Fokke
Amsterdam, Netherlands
All these comments about 1.Rb3+ do not take into account the enormous deficit white has. To win it has to be mate and the line involving 1.Rb3+ Ka8 2.Bb5 Qb7 3.Bc6 Rdb8 4.Bxb7 Rxb7
5.Qc6 Rff7?? is bad because Rb1 does fine.
The essence to win is to get the BK out of the a8 corner.
There is a forced mate.
1. Qb3+ Ka8 2. Qd5+ Kb8 (now the king does not have a8). Now Rb3+ resigns as forces mate with 3.…Qb5, 4 R*b5+, Kc7 5. Qb7 mate.
Psyche/anonymous