MESON Chess Problem Database
Problem Display
PID: 6309 (k2r2qR/1R6/8/N2P4/Q1P5/1K3B2/7B/8 w - - 0 1)
Schiffmann, Israel Abraham
Revista de Sah, 1928
#2
9 + 3
| 1397 | Faszinierendes Schachproblem | 1963 |
| 3310 | 2345 Chess Problems | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Qf7
- 2.Rxd8#
- 1...Qh7
- 2.Rxd8#
- 1...Qg1
- 2.Rxd8#
- 1...Qg2
- 2.Rxd8#
- 1...Qg6
- 2.Rxd8#
- 1...Qg7
- 2.Rxd8#
- 1...Qf7
- Tries
- 1.Rb5?
- threat
- 2.Sc6#
- 2.Sb7#
- 1...Ka7
- 2.Sc6#
- 2.Sb7#
- 1...Qe6
- 2.Sc6#
- 1...Qf7
- 2.Sb7#
- 1...Qh7
- 2.Sb7#
- 1...Qg3
- 2.Sc6#
- 1...Qg6
- 2.Sc6#
- 1...Qg7
- 2.Sb7#
- 1...Rd6
- 2.Sc6#
- 1...Rd7
- 2.Sb7#
- 1...Qg1!
- threat
- 1.Rb6?
- threat
- 2.Sc6#
- 2.Sb7#
- 2.Ra6#
- 1...Qxd5
- 2.Ra6#
- 1...Rxd5
- 2.Ra6#
- 1...Qe6
- 2.Sc6#
- 2.Sb7#
- 1...Qf7
- 2.Sb7#
- 1...Qh7
- 2.Sb7#
- 1...Qg1
- 2.Sc6#
- 2.Sb7#
- 1...Qg3
- 2.Sc6#
- 1...Qg6
- 2.Sc6#
- 2.Sb7#
- 1...Qg7
- 2.Sb7#
- 1...Qe8
- 2.Sc6#
- 2.Ra6#
- 1...Rd6
- 2.Sc6#
- 1...Rd7
- 2.Sb7#
- 1...Rb8
- 2.Sc6#
- 2.Sb7#
- 1...Ka7!
- threat
- 1.Rd7?
- threat
- 2.Sc6#
- 2.Sb7#
- 2.Qc6#
- 1...Rb8+
- 2.Sb7#
- 1...Qxd5
- 2.Bxd5#
- 2.Rhxd8#
- 1...Qg3
- 2.Sc6#
- 1...Qe6
- 2.Sc6#
- 2.Rhxd8#
- 2.dxe6#
- 1...Qg1
- 2.Rhxd8#
- 2.Qc6#
- 1...Qg6
- 2.Sc6#
- 2.Rhxd8#
- 1...Rc8
- 2.Sc6#
- 2.Sb7#
- 1...Rxd7!
- threat
- 1.Re7?
- threat
- 2.Sc6#
- 2.Sb7#
- 2.Qc6#
- 1...Rb8+
- 2.Sb7#
- 1...Qxd5
- 2.Bxd5#
- 2.Rxd8#
- 1...Rxd5
- 2.Bxd5#
- 2.Rxg8#
- 2.Qc6#
- 1...Qg3
- 2.Sc6#
- 1...Rd6
- 2.Sc6#
- 1...Qe6
- 2.Sc6#
- 2.dxe6#
- 1...Qg1
- 2.Rxd8#
- 2.Qc6#
- 1...Qg6
- 2.Sc6#
- 2.Rxd8#
- 1...Qe8
- 2.Sc6#
- 1...Rc8
- 2.Sc6#
- 2.Sb7#
- 1...Rd7!
- threat
- 1.Rb8+?
- 1...Ka7
- 2.Sc6#
- 1...Rxb8+!
- 1...Ka7
- 1.Rxg8?
- threat
- 2.Rxd8#
- 1...Rb8
- 2.Rgxb8#
- 1...Rc8
- 2.Rxc8#
- 1...Re8
- 2.Rxe8#
- 2.Qxe8#
- 1...Rf8
- 2.Rxf8#
- 1...Rxg8!
- threat
- 1.Rb5?
- Keys
- 1.Rc7!
- threat
- 2.Sc6#
- 1...Rb8+
- 2.Sb7#
- 1...Kb8
- 2.Sc6#
- 1...Qxd5
- 2.Rxd8#
- 1...Rxd5
- 2.Rxg8#
- 1...Qg1
- 2.Rxd8#
- threat
- 1.Rc7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 5
- Sets
- Q(c);OGATE,P_SPINR(b)::R(I),XR(b)
- Tries
- Try
- R(H);
- Threat
- DUALS(2)
- Vars
- Q(c);P_SPINR(b)::QAR(D)+S(F)
- Q(c);P_PINB(C),P_SPINR(b)::QAR(D)+S(F)
- R(b);P_SPINQ(c)::QAR(D)+S(F)
- Refutation
- Q(c);P_SPINR(b)
- Try
- R(H);
- Threat
- DUALS(3)
- Vars
- Q(c);P_PINP(E),P_SPINQ(c),P_SPINR(b),XP(G)::R(H)
- R(b);P_SPINQ(c),P_SPINR(b),XP(G)::R(H)
- Q(c);P_SPINR(b)::QAR(D)+S(F)
- Q(c);P_PINB(C),P_SPINR(b)::QAR(D)+S(F)
- R(b);P_SPINQ(c)::QAR(D)+S(F)
- Refutation
- K(a);P-FLIGHT
- Try
- R(H);
- Threat
- DUALS(3)
- Vars
- R(b);CHECK::QAR(D)+S(F)
- Q(c);P_PINB(C),P_SPINR(b)::QAR(D)+S(F)
- Refutation
- R(b);P_SPINQ(c),XR(H)
- Try
- R(H);
- Threat
- DUALS(3)
- Vars
- R(b);CHECK::QAR(D)+S(F)
- Q(c);P_PINB(C),P_SPINR(b)::QAR(D)+S(F)
- R(b);P_SPINQ(c)::QAR(D)+S(F)
- Q(c);::QAR(D)+S(F)
- Refutation
- R(b);P_SPINQ(c)
- Try
- R(H);CHECK
- Vars
- K(a);P-FLIGHT::QAR(D)+S(F),DCHECK
- Refutation
- R(b);CHECK,XR(H)
- Try
- R(I);P_PINR(b),XQ(c)
- Threat
- R(I),XR(b)
- Vars
- R(b);OGATE,P_PINR(H)::R1(I),XR(b)
- R(b);OGATE::R(I),XR(b)
- R(b);OGATEB::R(I),XR(b)
- Refutation
- R(b);N_SPINR(b),XR(I)
- Try
- Actual
- R(H);
- Threat
- QAR(D)+S(F)
- Vars
- R(b);CHECK,SBLOCK::QAR(D)+S(F)
- K(a);P-FLIGHT::S(F)
- Q(c);OGATE,P_PINP(E),P_SPINQ(c),P_SPINR(b),XP(G)::R(I),XR(b)
- R(b);OGATEB,P_SPINQ(c),P_SPINR(b),XP(G)::R(I),XQ(c)
- Q(c);OGATE,P_SPINR(b)::R(I),XR(b)
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