MESON Chess Problem Database
Problem Display
PID: 250603 (8/6p1/3p2B1/3P1RP1/4P2k/3p1r1P/3P1PpR/3Q2K1 w - - 0 1)
Rybakov, Vassily
Vecherni Moskva, 1931
(First published on Mon Mar 16 1931)
#2
11 + 6
| 15239 | Valois Notebooks | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rxf2
- 2.Qg4#
- 1...Re3
- 2.Qg4#
- 2.Qh5#
- 1...Rg3
- 2.Qh5#
- 1...Rxh3
- 2.Qh5#
- 1...Rf4
- 2.Qh5#
- 1...Rxf5
- 2.Qg4#
- 2.Qh5#
- 1...Rxf2
- Tries
- 1.Kxg2?
- 1...Rg3+
- 2.fxg3#
- 1...Rxh3
- 2.Rxh3#
- 2.Qh5#
- 1...Rxf5
- 2.Qg4#
- 2.Qh5#
- 1...Re3
- 2.Qg4#
- 2.Qh5#
- 1...Rf4
- 2.Qh5#
- 1...Rxf2+!
- 1...Rg3+
- 1.Bf7?
- 1...Rxf2
- 2.Qg4#
- 1...Rxh3
- 2.Qh5#
- 1...Rxf5
- 2.Qg4#
- 2.Qh5#
- 1...Re3
- 2.Qg4#
- 2.Qh5#
- 1...Rg3
- 2.Qh5#
- 1...Rf4
- 2.Qh5#
- 1...g6!
- 1...Rxf2
- 1.Be8?
- 1...Rxf2
- 2.Qg4#
- 1...Rxh3
- 2.Qh5#
- 1...Rxf5
- 2.Qg4#
- 2.Qh5#
- 1...Re3
- 2.Qg4#
- 2.Qh5#
- 1...Rg3
- 2.Qh5#
- 1...Rf4
- 2.Qh5#
- 1...g6!
- 1...Rxf2
- 1.Rxg2?
- 1...Rxf2
- 2.Qg4#
- 2.Qh5#
- 1...Rxh3
- 2.Rg4#
- 2.Rf4#
- 2.Qg4#
- 2.Qh5#
- 1...Rxf5
- 2.Qg4#
- 2.Qh5#
- 1...Re3
- 2.Qg4#
- 2.Qh5#
- 1...Rg3
- 2.Qh5#
- 1...Rf4
- 2.Qh5#
- 1...Kxh3!
- 1...Rxf2
- 1.Rf4+?
- 1...Rxf4
- 2.Qh5#
- 1...Kxg5!
- 1...Rxf4
- 1.Re5?
- 1...Rxf2
- 2.Qg4#
- 1...Rxh3
- 2.Qh5#
- 1...Rf5
- 2.Qg4#
- 2.Qh5#
- 1...Re3
- 2.Qg4#
- 2.Qh5#
- 1...Rg3
- 2.Qh5#
- 1...Rf4
- 2.Qh5#
- 1...Rf6
- 2.Qg4#
- 2.Qh5#
- 1...Rf7
- 2.Qg4#
- 2.Qh5#
- 1...Rf8
- 2.Qg4#
- 2.Qh5#
- 1...dxe5!
- 1...Rxf2
- 1.Rf7?
- 1...Rxf2
- 2.Qg4#
- 1...Rxh3
- 2.Qh5#
- 1...Rxf7
- 2.Qg4#
- 2.Qh5#
- 1...Re3
- 2.Qg4#
- 2.Qh5#
- 1...Rg3
- 2.Qh5#
- 1...Rf4
- 2.Qh5#
- 1...Rf5
- 2.Qg4#
- 2.Qh5#
- 1...Rf6
- 2.Qg4#
- 2.Qh5#
- 1...Kxg5!
- 1...Rxf2
- 1.Rf8?
- 1...Rxf2
- 2.Qg4#
- 1...Rxh3
- 2.Qh5#
- 1...Rxf8
- 2.Qg4#
- 2.Qh5#
- 1...Re3
- 2.Qg4#
- 2.Qh5#
- 1...Rg3
- 2.Qh5#
- 1...Rf4
- 2.Qh5#
- 1...Rf5
- 2.Qg4#
- 2.Qh5#
- 1...Rf6
- 2.Qg4#
- 2.Qh5#
- 1...Rf7
- 2.Qg4#
- 2.Qh5#
- 1...Kxg5!
- 1...Rxf2
- 1.Qe2?
- 1...Rxf2
- 2.Qg4#
- 2.Qxf2#
- 1...Rxh3
- 2.Qh5#
- 1...Rxf5
- 2.Qg4#
- 2.Qh5#
- 1...Re3
- 2.Qg4#
- 2.Qh5#
- 1...Rg3
- 2.Qh5#
- 1...Rf4
- 2.Qh5#
- 1...dxe2!
- 1...Rxf2
- 1.e5?
- 1...Rxf2
- 2.Qg4#
- 1...Rxh3
- 2.Qa4#
- 2.Qh5#
- 1...Rxf5
- 2.Qg4#
- 2.Qh5#
- 1...Re3
- 2.Qg4#
- 2.Qh5#
- 1...Rg3
- 2.Qh5#
- 1...Rf4
- 2.Qh5#
- 1...dxe5!
- 1...Rxf2
- 1.Kxg2?
- Keys
- 1.Qe1!
- 1...Rxf2
- 2.Qxf2#
- 1...Rxh3
- 2.f3#
- 1...Rxf5
- 2.f4#
- 1...Re3
- 2.fxe3#
- 1...Rg3
- 2.fxg3#
- 1...Rf4
- 2.f3#
- 1...Rxf2
- 1.Qe1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(c);OGATE,XP(D)::QAR1(A)
- R(c);OGATE::QAR1(A)
- R(c);OGATE,P_SPINR(c),XP(F)::QAR1(A)
- Tries
- Try
- K(B);P-FLIGHT,XP(a)
- Vars
- R(c);CHECK,OGATE::P(D),XR(c)
- R(c);OGATE::QAR1(A)
- Refutation
- R(c);CHECK,XP(D)
- Try
- B(K);
- Vars
- R(c);OGATE,XP(D)::QAR1(A)
- R(c);OGATE,P_SPINR(c),XP(F)::QAR1(A)
- R(c);OGATE::QAR1(A)
- Refutation
- P(f);
- Try
- B(K);
- Vars
- R(c);OGATE,XP(D)::QAR1(A)
- R(c);OGATE,P_SPINR(c),XP(F)::QAR1(A)
- R(c);OGATE::QAR1(A)
- Refutation
- P(f);
- Try
- R(E);XP(a)
- Vars
- R(c);OGATE,P_PINR(E)::QAR1(A)
- R(c);OGATE::QAR1(A)
- Refutation
- K(d);P-FLIGHT,XP(F)
- Try
- R(I);CHECK
- Vars
- R(c);OGATE,XR(I)::QAR1(A)
- Refutation
- K(d);S_FLIGHT,XP(J)
- Try
- R(I);
- Vars
- R(c);OGATE,XP(D)::QAR1(A)
- R(c);OGATE,P_SPINR(c),XP(F)::QAR1(A)
- R(c);OGATE::QAR1(A)
- Refutation
- P(e);XR(I)
- Try
- R(I);
- Vars
- R(c);OGATE,XP(D)::QAR1(A)
- R(c);OGATE,P_SPINR(c),XP(F)::QAR1(A)
- R(c);OGATE::QAR1(A)
- Refutation
- K(d);S_FLIGHT,XP(J)
- Try
- R(I);
- Vars
- R(c);OGATE,XP(D)::QAR1(A)
- R(c);OGATE,P_SPINR(c),XP(F)::QAR1(A)
- R(c);OGATE::QAR1(A)
- Refutation
- K(d);S_FLIGHT,XP(J)
- Try
- Q(A);
- Vars
- R(c);OGATE,P_SPINR(c),XP(F)::QAR1(A)
- R(c);OGATE::QAR1(A)
- Refutation
- P(b);XQ(A)
- Try
- P(G);
- Vars
- R(c);OGATE,XP(D)::QAR1(A)
- R(c);OGATE::QAR1(A)
- Refutation
- P(e);XP(G)
- Try
- Actual
- Q(A);
- Vars
- R(c);OGATE,P_SPINR(c),XP(D)::QAB(A),XR(c)
- R(c);OGATE,P_SPINR(c),XP(F)::QAB(A)+P(D)
- R(c);OGATE,XR(I)::QAB(A)+P(D)
- R(c);OGATE::QAB(A)+P(D),XR(c)
- R(c);OGATE::P(D),XR(c)
- R(c);OGATE::QAB(A)+P(D)
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