MESON Chess Problem Database
Problem Display
PID: 12080 (1K2R3/1pp3pr/2p2p2/4Nk1P/5N1P/1r1p2BP/B1b2p2/2R4Q w - - 0 1)
Hoffmann, Fritz
2nd Comm., Schweizerische Arbeiter Schachzeitung, 1974
#2
11 + 11
| 422 | Suomen Tehtavaniekat | 1991 |
| 1106 | Rochade Europa | 2011 |
SOLUTION
- SOUND
- Sets
- 1...fxe5
- 2.Rf8#
- 1...fxe5
- Tries
- 1.Se2?
- threat
- 2.Sd4#
- 2.Qf3#
- 1...fxe5
- 2.Qf3#
- 1...f1Q
- 2.Sd4#
- 2.Rxf1#
- 1...f1R
- 2.Sd4#
- 2.Rxf1#
- 1...Rb4
- 2.Be6#
- 1...d2
- 2.Sd4#
- 1...c5
- 2.Qf3#
- 1...dxe2!
- threat
- 1.Sfxd3?
- threat
- 2.Qf3#
- 1...Rxd3
- 2.Be6#
- 1...f1Q
- 2.Rxf1#
- 1...f1R
- 2.Rxf1#
- 1...Rb4
- 2.Be6#
- 1...Bd1!
- threat
- 1.Sd5?
- threat
- 2.Se3#
- 2.Qf3#
- 1...cxd5
- 2.Qf3#
- 1...fxe5
- 2.Rxe5#
- 2.Qf3#
- 1...f1Q
- 2.Se3#
- 2.Rxf1#
- 1...f1S
- 2.Rxf1#
- 2.Qf3#
- 1...f1R
- 2.Se3#
- 2.Rxf1#
- 1...Rb4
- 2.Se3#
- 2.Se7#
- 1...Bd1
- 2.Se3#
- 1...d2!
- threat
- 1.Se6?
- threat
- 2.Sd4#
- 2.Qf3#
- 1...fxe5
- 2.Qf3#
- 1...f1Q
- 2.Sd4#
- 2.Rxf1#
- 1...f1R
- 2.Sd4#
- 2.Rxf1#
- 1...Bd1
- 2.Sd4#
- 1...d2
- 2.Sd4#
- 1...c5
- 2.Qf3#
- 1...Rb4!
- threat
- 1.Sc4?
- threat
- 2.Se3#
- 2.Qe4#
- 1...f1S
- 2.Qe4#
- 1...d2!
- threat
- 1.Sg4?
- threat
- 2.Se3#
- 2.Qe4#
- 1...f1S
- 2.Qe4#
- 1...Rb4
- 2.Se3#
- 2.Be6#
- 1...d2!
- threat
- 1.Sxc6?
- threat
- 2.Sd4#
- 2.Qe4#
- 2.Qd5#
- 1...d2
- 2.Sd4#
- 2.Qd5#
- 1...Rb4
- 2.Be6#
- 2.Qd5#
- 1...Rb5
- 2.Sd4#
- 2.Be6#
- 2.Qe4#
- 1...bxc6+!
- threat
- 1.Seg6?
- threat
- 2.Qe4#
- 1...Rb4
- 2.Be6#
- 1...d2!
- threat
- 1.Sd7?
- threat
- 2.Qe4#
- 1...Rb4
- 2.Be6#
- 1...d2!
- threat
- 1.Sf7?
- threat
- 2.Qe4#
- 1...Rb4
- 2.Be6#
- 1...d2!
- threat
- 1.Se2?
- Keys
- 1.Sexd3!
- threat
- 2.Qe4#
- 1...Bxd3
- 2.Rc5#
- 1...Rb4
- 2.Be6#
- threat
- 1.Sexd3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- P(g);OGATEB,SBLOCK,XS(H)::R(K)
- Tries
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- P(g);XS(H)::QAR2(B)
- R(c);OGATE::B(C)
- P(d);::S(F)
- P(f);::QAR2(B)
- Refutation
- P(d);XS(F)
- Try
- S(F);XP(d)
- Threat
- QAR2(B)
- Vars
- R(c);OGATE,XS(F)::B(C)
- P(b);OGATEB::R(A),XQ(b)
- P(b);OGATEB::R(A),XR(b)
- R(c);OGATE::B(C)
- Refutation
- B(a);
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- P(f);XS(F)::QAR2(B)
- B(a);::S(F)
- Refutation
- P(d);
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- P(g);XS(H)::QAR2(B)
- B(a);::S(F)
- P(d);::S(F)
- P(f);::QAR2(B)
- Refutation
- R(c);
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- P(b);::QAB1(B)
- Refutation
- P(d);
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- P(b);::QAB1(B)
- Refutation
- P(d);
- Try
- S(H);XP(f)
- Threat
- DUALS(3)
- Refutation
- P(h);CHECK,XS(H)
- Try
- S(H);
- Threat
- QAB1(B)
- Vars
- R(c);OGATE::B(C)
- Refutation
- P(d);
- Try
- S(H);
- Threat
- QAB1(B)
- Vars
- R(c);OGATE::B(C)
- Refutation
- P(d);
- Try
- S(H);
- Threat
- QAB1(B)
- Vars
- R(c);OGATE::B(C)
- Refutation
- P(d);
- Try
- Actual
- S(H);XP(d)
- Threat
- QAB1(B)
- Vars
- B(a);OGATE,XS(H)::R(A)
- R(c);OGATE::B(C)
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