MESON Chess Problem Database
Problem Display
PID: 87724 (4r3/2B5/7b/6R1/1pK1kN2/3pp1r1/6P1/7Q w - - 0 1)
Pieprzyk, Rudolf
Problemista, 1966
#2
6 + 7
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rxg2
- 2.Qxg2#
- 1...Rf3
- 2.gxf3#
- 1...Rh3
- 2.gxh3#
- 1...Rg4
- 2.g3#
- 1...Rxg5
- 2.g4#
- 1...Bxg5
- 2.Qh7#
- 1...Bg7
- 2.Qh7#
- 1...Bf8
- 2.Qh7#
- 1...d2
- 2.Qb1#
- 1...Rxg2
- Tries
- 1.Sxd3?
- threat
- 2.Sc5#
- 1...Rxg2
- 2.Qxg2#
- 1...Rxg5
- 2.g4#
- 1...Bxg5
- 2.Qh7#
- 1...Re5
- 2.Rxe5#
- 1...Bf8
- 2.Qh7#
- 1...e2!
- threat
- 1.Sh5?
- threat
- 2.Sxg3#
- 2.Sf6#
- 1...Rxg2
- 2.Qxg2#
- 1...Rxg5
- 2.g4#
- 1...Bxg5
- 2.Sxg3#
- 1...Rf3
- 2.gxf3#
- 1...Rh3
- 2.Sf6#
- 2.gxh3#
- 1...Rg4
- 2.Sf6#
- 2.g3#
- 1...Re5
- 2.Rxe5#
- 1...Re6
- 2.Sxg3#
- 1...Rf8
- 2.Sxg3#
- 2.Re5#
- 1...Bg7
- 2.Sxg3#
- 1...e2!
- threat
- 1.Se6?
- threat
- 2.Sc5#
- 2.Re5#
- 1...Rxg2
- 2.Qxg2#
- 1...Rxg5
- 2.g4#
- 1...Bxg5
- 2.Qh7#
- 1...e2
- 2.Re5#
- 1...Bg7
- 2.Sc5#
- 2.Qh7#
- 1...Bf8
- 2.Re5#
- 2.Qh7#
- 1...Rxe6!
- threat
- 1.Qf1?
- threat
- 2.Qxd3#
- 1...Rxg2
- 2.Qxg2#
- 1...Re5
- 2.Rxe5#
- 1...Rd8
- 2.Re5#
- 1...d2
- 2.Qd3#
- 2.Qb1#
- 1...e2!
- threat
- 1.Sxd3?
- Keys
- 1.Se2!
- threat
- 2.Sxg3#
- 1...Rxg2
- 2.Qxg2#
- 1...Rxg5
- 2.g4#
- 1...dxe2
- 2.Qb1#
- 1...Rf3
- 2.gxf3#
- 1...Rh3
- 2.gxh3#
- 1...Rg4
- 2.g3#
- 1...Re5
- 2.Rxe5#
- threat
- 1.Se2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 4
- Sets
- R(c);OGATE,P_SPINR(c),XP(B)::QAB(A),XR(c)
- R(c);OGATE::P(B),XR(c)
- R(c);OGATE::QAB(A)+P(B),XR(c)
- R(c);OGATE::QAB(A)+P(B)
- R(c);OGATE,XR(E)::QAB(A)+P(B)
- B(f);OGATE,XR(E)::QAB(A)
- B(f);OGATE::QAB(A)
- P(a);OGATEB::QAB(A)
- Tries
- Try
- S(D);XP(a)
- Threat
- S(D)
- Vars
- R(c);OGATE,P_SPINR(c),XP(B)::QAB(A),XR(c)
- R(c);OGATE,XR(E)::QAB(A)+P(B)
- B(f);OGATE,XR(E)::QAB(A)
- R(g);N_GUARD::R1(E),XR(g)
- B(f);OGATE::QAB(A)
- Refutation
- P(b);
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- R(c);OGATE,P_SPINR(c),XP(B)::QAB(A),XR(c)
- R(c);OGATE,XR(E)::QAB(A)+P(B)
- B(f);XR(E)::S(D),XR(c)
- R(c);OGATE::P(B),XR(c)
- R(g);N_GUARD::R1(E),XR(g)
- R(g);::S(D),XR(c)
- B(f);::S(D),XR(c)
- Refutation
- P(b);
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- R(c);OGATE,P_SPINR(c),XP(B)::QAB(A),XR(c)
- R(c);OGATE,XR(E)::QAB(A)+P(B)
- B(f);OGATE,XR(E)::QAB(A)
- P(b);::R1(E)
- Refutation
- R(g);XS(D)
- Try
- Q(A);
- Threat
- QAB1(A),XP(a)
- Vars
- R(c);OGATE,XP(B)::QAB(A),XR(c)
- R(g);N_GUARD::R1(E),XR(g)
- R(g);N_GUARD::R1(E)
- Refutation
- P(b);
- Try
- Actual
- S(D);
- Threat
- S(D),XR(c)
- Vars
- R(c);OGATE,P_SPINR(c),XP(B)::QAB(A),XR(c)
- R(c);OGATE,XR(E)::QAB(A)+P(B)
- P(a);OGATEB,XS(D)::QAB(A)
- R(c);OGATE::P(B),XR(c)
- R(c);OGATE::QAB(A)+P(B),XR(c)
- R(c);OGATE::QAB(A)+P(B)
- R(g);N_GUARD::R1(E),XR(g)
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