MESON Chess Problem Database
Problem Display
PID: 92100 (7K/1pN3B1/1p2R3/n1kp4/1pqR1p2/8/2QNn2b/7b w - - 0 1)
Wielgos, Oskar
Schach, 1979
#2
7 + 11
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Sxd4
- 2.Bf8#
- 1...Sb3
- 2.Sxb3#
- 1...Sc6
- 2.Sb3#
- 1...f3
- 2.Rxd5#
- 1...Sxd4
- Tries
- 1.Sf3?
- threat
- 2.Bf8#
- 2.Rxd5#
- 1...Qxc2
- 2.Bf8#
- 1...Sxd4
- 2.Bxd4#
- 2.Bf8#
- 1...b3
- 2.Bf8#
- 1...Qc3
- 2.Bf8#
- 1...Sc3
- 2.Bf8#
- 1...Sc6
- 2.Rxd5#
- 1...Bxf3!
- threat
- 1.Se4+?
- 1...dxe4
- 2.Rd5#
- 1...Bxe4!
- 1...dxe4
- 1.Rd3?
- threat
- 2.Bf8#
- 1...Sc6
- 2.Sb3#
- 1...f3
- 2.Rxd5#
- 1...Qc3!
- threat
- 1.Rxc4+?
- 1...Sxc4
- 2.Sb3#
- 1...dxc4!
- 1...Sxc4
- 1.Qxc4+?
- 1...Sxc4
- 2.Sb3#
- 1...dxc4!
- 1...Sxc4
- 1.Sf3?
- Keys
- 1.Qf5!
- threat
- 2.Qf8#
- 1...Sc6
- 2.Rxc4#
- 1...f3
- 2.Se4#
- threat
- 1.Qf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 2
- Sets
- S(b);SBLOCK,XR(C)::B(F)
- S(g);N_GUARD::S(B),XS(g)
- S(g);N_GUARD::S(B)
- P(f);S_CUTB(a)::R1(C),XP(i)
- Tries
- Try
- S(B);
- Threat
- DUALS(2)
- Vars
- Q(e);N_SPINQ(e),XQ(A)::B(F)
- P(d);::B(F)
- Q(e);::B(F)
- S(b);N_SPINQ(e)::B(F)
- S(g);::R1(C),XP(i)
- Refutation
- B(a);XS(B)
- Try
- S(B);CHECK
- Vars
- P(i);XS(B)::R1(C)
- Refutation
- B(a);XS(B)
- Try
- R(C);
- Threat
- B(F)
- Vars
- S(g);N_GUARD::S(B)
- P(f);S_CUTB(a)::R1(C),XP(i)
- Refutation
- Q(e);P_PINB(F)
- Try
- R(C);CHECK,XQ(e)
- Vars
- S(g);P_SPINS(g),XR(C)::S(B)
- Refutation
- P(i);P_SPINP(i),XR(C)
- Try
- Q(A);CHECK,XQ(e)
- Vars
- S(g);XQ(A)::S(B)
- Refutation
- P(i);XQ(A)
- Try
- Actual
- Q(A);N_PINQ(e),P_PINP(i)
- Threat
- QAB(A)
- Vars
- S(g);N_GUARD::R1(C),XQ(e)
- P(f);S_CUTB(a)::S(B)
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