MESON Chess Problem Database
Problem Display
PID: 272784 (8/1Q6/N2p1p2/P1R2P2/r1P5/2k5/b1P5/3K2B1 w - - 0 1)
Surkov, Ruslan Albertovich
Shakhmatnaya kompozitsiya, 1998
#2
9 + 5
SOLUTION
- SOUND
- Sets
- 1...Ra3
- 2.Qb4#
- 1...Rb4
- 2.Qxb4#
- 1...Rxc4
- 2.Qb4#
- 1...Rxa5
- 2.Qb4#
- 1...Bb1
- 2.Qb3#
- 1...Bb3
- 2.Qxb3#
- 1...Bxc4
- 2.Qb3#
- 1...Ra3
- Tries
- 1.Kc1?
- threat
- 2.Qf3#
- 2.Qb2#
- 1...Rb4
- 2.Qf3#
- 2.Qxb4#
- 1...Bb3
- 2.Qf3#
- 2.Qxb3#
- 1...d5
- 2.Qb2#
- 1...dxc5!
- threat
- 1.Rc6?
- 1...Rxc4
- 2.Qb4#
- 1...Rxa5
- 2.Qb4#
- 1...Bxc4
- 2.Qb3#
- 1...Rb4
- 2.Qxb4#
- 1...Bb3
- 2.Qxb3#
- 1...Ra3
- 2.Qb4#
- 1...Bb1
- 2.Qb3#
- 1...d5!
- 1...Rxc4
- 1.Rc7?
- 1...Rxc4
- 2.Qb4#
- 1...Rxa5
- 2.Qb4#
- 1...Bxc4
- 2.Qb3#
- 1...Rb4
- 2.Qxb4#
- 1...Bb3
- 2.Qxb3#
- 1...Ra3
- 2.Qb4#
- 1...Bb1
- 2.Qb3#
- 1...d5!
- 1...Rxc4
- 1.Rc8?
- 1...Rxc4
- 2.Qb4#
- 1...Rxa5
- 2.Qb4#
- 1...Bxc4
- 2.Qb3#
- 1...Rb4
- 2.Qxb4#
- 1...Bb3
- 2.Qxb3#
- 1...Ra3
- 2.Qb4#
- 1...Bb1
- 2.Qb3#
- 1...d5!
- 1...Rxc4
- 1.Kc1?
- Keys
- 1.Rd5!
- 1...Kxc4
- 2.Qc6#
- 1...Rxc4
- 2.Rd3#
- 1...Rxa5
- 2.Qb4#
- 1...Bxc4
- 2.Bd4#
- 1...Rb4
- 2.Qxb4#
- 1...Bb3
- 2.Qxb3#
- 1...Ra3
- 2.Qb4#
- 1...Bb1
- 2.Qb3#
- 1...Kxc4
- 1.Rd5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(c);N_GUARD::QAB1(I)
- R(c);N_GUARD::QAB1(I),XR(c)
- R(c);N_GUARD,P_SPINR(c),XP(D)::QAB1(I)
- R(c);N_GUARD,XP(E)::QAB1(I)
- B(a);N_GUARD::QAR1(I)
- B(a);N_GUARD,P_PINP(C)::QAR1(I),XB(a)
- B(a);N_GUARD,P_SPINB(a),XP(D)::QAR1(I)
- Tries
- Try
- K(A);P-FLIGHT
- Threat
- DUALS(2)
- Vars
- P(d);::QAB1(I)
- Refutation
- P(d);XR(F)
- Try
- R(F);
- Vars
- R(c);N_GUARD,P_SPINR(c),XP(D)::QAB1(I)
- R(c);N_GUARD,XP(E)::QAB1(I)
- B(a);N_GUARD,P_SPINB(a),XP(D)::QAR1(I)
- R(c);N_GUARD::QAB1(I),XR(c)
- B(a);N_GUARD,P_PINP(C)::QAR1(I),XB(a)
- R(c);N_GUARD::QAB1(I)
- B(a);N_GUARD::QAR1(I)
- Refutation
- P(d);
- Try
- R(F);
- Vars
- R(c);N_GUARD,P_SPINR(c),XP(D)::QAB1(I)
- R(c);N_GUARD,XP(E)::QAB1(I)
- B(a);N_GUARD,P_SPINB(a),XP(D)::QAR1(I)
- R(c);N_GUARD::QAB1(I),XR(c)
- B(a);N_GUARD,P_PINP(C)::QAR1(I),XB(a)
- R(c);N_GUARD::QAB1(I)
- B(a);N_GUARD::QAR1(I)
- Refutation
- P(d);
- Try
- R(F);
- Vars
- R(c);N_GUARD,P_SPINR(c),XP(D)::QAB1(I)
- R(c);N_GUARD,XP(E)::QAB1(I)
- B(a);N_GUARD,P_SPINB(a),XP(D)::QAR1(I)
- R(c);N_GUARD::QAB1(I),XR(c)
- B(a);N_GUARD,P_PINP(C)::QAR1(I),XB(a)
- R(c);N_GUARD::QAB1(I)
- B(a);N_GUARD::QAR1(I)
- Refutation
- P(d);
- Try
- Actual
- R(F);
- Vars
- K(b);OGATEB,P-FLIGHT,XP(D)::QAR2(I)
- R(c);SBLOCK,XP(D)::R1(F)
- R(c);N_GUARD,XP(E)::QAB1(I)
- B(a);SBLOCK,XP(D)::B(B)
- R(c);N_GUARD::QAB1(I),XR(c)
- B(a);N_GUARD,P_PINP(C)::QAR1(I),XB(a)
- R(c);N_GUARD::QAB1(I)
- B(a);N_GUARD::QAR1(I)
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