MESON Chess Problem Database
Problem Display
PID: 180301 (3Q4/8/2P1P3/1K3P2/1p1Npp1B/1P2pP2/N3RpR1/3k4 w - - 0 1)
Lider, Valentin Viktorovich
diagrammes, 1976
#2
12 + 6
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...f1Q
- 2.Sc2#
- 1...f1S
- 2.Re1#
- 1...f1B
- 2.Sc2#
- 1...f1R
- 2.Sc2#
- 1...f1Q
- Tries
- 1.Ka4?
- 1...f1Q
- 2.Sc2#
- 2.Sb5#
- 1...f1S
- 2.Re1#
- 1...f1B
- 2.Sc2#
- 2.Sb5#
- 2.Re1#
- 1...f1R
- 2.Sc2#
- 2.Sb5#
- 1...exf3!
- 1...f1Q
- 1.Kxb4?
- 1...f1Q
- 2.Sc2#
- 2.Sb5#
- 1...f1S
- 2.Re1#
- 1...f1B
- 2.Sc2#
- 2.Sb5#
- 2.Re1#
- 1...f1R
- 2.Sc2#
- 2.Sb5#
- 1...exf3!
- 1...f1Q
- 1.Kc4?
- 1...f1Q
- 2.Sc2#
- 2.Sb5#
- 1...f1S
- 2.Re1#
- 1...f1B
- 2.Sc2#
- 2.Sb5#
- 1...f1R
- 2.Sc2#
- 2.Sb5#
- 1...exf3!
- 1...f1Q
- 1.Ka5?
- 1...f1Q
- 2.Sc2#
- 2.Sb5#
- 1...f1S
- 2.Re1#
- 1...f1B
- 2.Sc2#
- 2.Sb5#
- 2.Re1#
- 1...f1R
- 2.Sc2#
- 2.Sb5#
- 1...exf3!
- 1...f1Q
- 1.Kc5?
- 1...f1Q
- 2.Sc2#
- 2.Sb5#
- 1...f1S
- 2.Re1#
- 1...f1B
- 2.Sc2#
- 2.Sb5#
- 2.Re1#
- 1...f1R
- 2.Sc2#
- 2.Sb5#
- 1...exf3!
- 1...f1Q
- 1.Ka6?
- 1...f1Q
- 2.Sc2#
- 2.Sb5#
- 1...f1S
- 2.Re1#
- 1...f1B
- 2.Sc2#
- 2.Sb5#
- 1...f1R
- 2.Sc2#
- 2.Sb5#
- 1...exf3!
- 1...f1Q
- 1.Kb6?
- 1...f1Q
- 2.Sc2#
- 2.Sb5#
- 1...f1S
- 2.Re1#
- 1...f1B
- 2.Sc2#
- 2.Sb5#
- 2.Re1#
- 1...f1R
- 2.Sc2#
- 2.Sb5#
- 1...exf3!
- 1...f1Q
- 1.Sc3+?
- 1...Kc1
- 2.Rc2#
- 1...bxc3!
- 1...Kc1
- 1.Rh2?
- 1...f1Q
- 2.Sc2#
- 1...f1S
- 2.Re1#
- 1...f1B
- 2.Sc2#
- 1...f1R
- 2.Sc2#
- 1...exf3!
- 1...f1Q
- 1.Qd5?
- 1...f1Q
- 2.Sc2#
- 1...f1S
- 2.Re1#
- 1...f1B
- 2.Sc2#
- 1...f1R
- 2.Sc2#
- 1...exf3!
- 1...f1Q
- 1.Qd6?
- 1...f1Q
- 2.Sc2#
- 1...f1S
- 2.Re1#
- 1...f1B
- 2.Sc2#
- 1...f1R
- 2.Sc2#
- 1...exf3!
- 1...f1Q
- 1.Qd7?
- 1...f1Q
- 2.Sc2#
- 1...f1S
- 2.Re1#
- 1...f1B
- 2.Sc2#
- 1...f1R
- 2.Sc2#
- 1...exf3!
- 1...f1Q
- 1.fxe4?
- 1...f1Q
- 2.Sc2#
- 2.Sf3#
- 1...f1S
- 2.Re1#
- 1...f1B
- 2.Sc2#
- 2.Sf3#
- 1...f1R
- 2.Sc2#
- 2.Sf3#
- 1...f3!
- 1...f1Q
- 1.f6?
- 1...f1Q
- 2.Sc2#
- 2.Sf5#
- 1...f1S
- 2.Re1#
- 1...f1B
- 2.Sc2#
- 2.Sf5#
- 1...f1R
- 2.Sc2#
- 2.Sf5#
- 1...exf3!
- 1...f1Q
- 1.c7?
- 1...f1Q
- 2.Sc2#
- 2.Sc6#
- 1...f1S
- 2.Re1#
- 1...f1B
- 2.Sc2#
- 2.Sc6#
- 1...f1R
- 2.Sc2#
- 2.Sc6#
- 1...exf3!
- 1...f1Q
- 1.e7?
- 1...f1Q
- 2.Sc2#
- 2.Se6#
- 1...f1S
- 2.Re1#
- 1...f1B
- 2.Sc2#
- 2.Se6#
- 1...f1R
- 2.Sc2#
- 2.Se6#
- 1...exf3!
- 1...f1Q
- 1.Ka4?
- Keys
- 1.Rb2!
- 1...f1Q+
- 2.Se2#
- 1...f1B+
- 2.Se2#
- 1...Ke1
- 2.Rg1#
- 1...exf3
- 2.Sxf3#
- 1...f1S
- 2.Rb1#
- 1...f1R
- 2.Sc2#
- 2.Se2#
- 2.Rb1#
- 1...e2
- 2.Sc2#
- 1...f1Q+
- 1.Rb2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 3
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- P(b);P_PINR(B)::QAR(L)+S(F)
- P(b);N_GUARD::R1(B)
- P(b);::QAR(L)+S(F)
- Tries
- Try
- K(H);S_FLIGHT
- Vars
- P(b);N_GUARD::R1(B)
- Refutation
- P(e);XP(E)
- Try
- K(H);P-FLIGHT,XP(d)
- Vars
- P(b);N_GUARD::R1(B)
- Refutation
- P(e);XP(E)
- Try
- K(H);S_FLIGHT
- Vars
- P(b);N_GUARD::R1(B)
- Refutation
- P(e);XP(E)
- Try
- K(H);P-FLIGHT
- Vars
- P(b);N_GUARD::R1(B)
- Refutation
- P(e);XP(E)
- Try
- K(H);P-FLIGHT
- Vars
- P(b);N_GUARD::R1(B)
- Refutation
- P(e);XP(E)
- Try
- K(H);S_FLIGHT
- Vars
- P(b);N_GUARD::R1(B)
- Refutation
- P(e);XP(E)
- Try
- K(H);P-FLIGHT
- Vars
- P(b);N_GUARD::R1(B)
- Refutation
- P(e);XP(E)
- Try
- S(A);CHECK
- Vars
- K(a);P-FLIGHT::R1(B)
- Refutation
- P(d);XS(A)
- Try
- R(C);
- Vars
- P(b);P_PINR(B)::QAR(L)+S(F)
- P(b);N_GUARD::R1(B)
- P(b);::QAR(L)+S(F)
- Refutation
- P(e);XP(E)
- Try
- Q(L);
- Vars
- P(b);P_PINR(B)::QAR(L)+S(F)
- P(b);N_GUARD::R1(B)
- P(b);::QAR(L)+S(F)
- Refutation
- P(e);XP(E)
- Try
- Q(L);
- Vars
- P(b);P_PINR(B)::QAR(L)+S(F)
- P(b);N_GUARD::R1(B)
- P(b);::QAR(L)+S(F)
- Refutation
- P(e);XP(E)
- Try
- Q(L);
- Vars
- P(b);P_PINR(B)::QAR(L)+S(F)
- P(b);N_GUARD::R1(B)
- P(b);::QAR(L)+S(F)
- Refutation
- P(e);XP(E)
- Try
- P(E);XP(e)
- Vars
- P(b);N_GUARD::R1(B)
- Refutation
- P(f);
- Try
- P(I);
- Vars
- P(b);N_GUARD::R1(B)
- Refutation
- P(e);XP(E)
- Try
- P(J);
- Vars
- P(b);N_GUARD::R1(B)
- Refutation
- P(e);XP(E)
- Try
- P(K);
- Vars
- P(b);N_GUARD::R1(B)
- Refutation
- P(e);XP(E)
- Try
- Actual
- R(B);
- Vars
- P(b);CHECK::QAR(L)+S(F)
- K(a);P-FLIGHT,P_SPINP(b)::R(C)
- P(e);XP(E)::QAR(L)+S(F),XP(e)
- P(b);::R(B)
- P(c);SBLOCK::QAR(L)+S(F)
Developed and maintained by Brian Stephenson.
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