MESON Chess Problem Database
Problem Display
PID: 179952 (2qr4/2P1BP2/5R2/RN1pkBNQ/5ppb/Kp2PP2/8/1br5 w - - 0 1)
Gross, Erwin
Deutsche Schachzeitung, 1970
#2
12 + 10
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...gxf3
- 2.Sxf3#
- 1...gxf3
- Tries
- 1.Be4?
- threat
- 2.exf4#
- 1...fxe3
- 2.f4#
- 1...Qf5
- 2.Rxf5#
- 1...Bg3
- 2.Se6#
- 1...dxe4!
- threat
- 1.Be6?
- threat
- 2.exf4#
- 1...fxe3
- 2.f4#
- 1...Bf5
- 2.Rxf5#
- 1...Bg3
- 2.Se4#
- 1...Rc4!
- threat
- 1.Bd7?
- threat
- 2.exf4#
- 1...fxe3
- 2.f4#
- 1...d4
- 2.Sc3#
- 1...Bf5
- 2.Rxf5#
- 1...Bg3
- 2.Se4#
- 1...Rc4!
- threat
- 1.Bd6+?
- 1...Kxf6
- 2.Qg6#
- 1...Rxd6!
- 1...Kxf6
- 1.Re6+?
- 1...Kxf5
- 2.Sd4#
- 2.Qxg4#
- 2.Qg6#
- 2.Qh7#
- 2.fxg4#
- 1...Qxe6!
- 1...Kxf5
- 1.Be4?
- Keys
- 1.Bc2!
- threat
- 2.exf4#
- 1...fxe3
- 2.f4#
- 1...d4
- 2.Sd6#
- 1...Qf5
- 2.Rxf5#
- 1...Bg3
- 2.Se6#
- threat
- 1.Bc2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 1
- Sets
- P(e);XP(C)::S(G),XP(e)
- Tries
- Try
- B(F);
- Threat
- P(B),XP(d)
- Vars
- P(d);OGATE,XP(B)::P(C)
- Q(i);N_GUARD::R1(I),XQ(i)
- B(f);N_GUARD::QAR(H)+S(G)
- Refutation
- P(g);XB(F)
- Try
- B(F);
- Threat
- P(B),XP(d)
- Vars
- P(d);OGATE,XP(B)::P(C)
- B(a);N_GUARD::R1(I),XB(a)
- B(f);N_GUARD::QAR(H)+S(G)
- Refutation
- R(b);
- Try
- B(F);
- Threat
- P(B),XP(d)
- Vars
- P(d);OGATE,XP(B)::P(C)
- P(g);::R(D)+S(E)
- B(a);N_GUARD::R1(I),XB(a)
- B(f);N_GUARD::QAR(H)+S(G)
- Refutation
- R(b);
- Try
- B(K);CHECK
- Vars
- K(h);S_FLIGHT,XR(I)::QAR1(H)
- Refutation
- R(j);XB(K)
- Try
- R(I);CHECK
- Refutation
- Q(i);XR(I)
- Try
- Actual
- B(F);
- Threat
- P(B),XP(d)
- Vars
- P(d);OGATE,XP(B)::P(C)
- P(g);::R(D)+S(E)
- Q(i);N_GUARD::R1(I),XQ(i)
- B(f);N_GUARD::QAR(H)+S(G)
Developed and maintained by Brian Stephenson.
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