MESON Chess Problem Database
Problem Display
PID: 86863 (2NK1R2/3Bp3/p1N5/r5p1/r3k1p1/6B1/5P2/nb1Q4 w - - 0 1)
Davidenko, Fedor Vasilevich
UV CSTV, 1979
#2
8 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Ra2
- 2.Qd4#
- 1...Ra3
- 2.Qd4#
- 1...Rd4
- 2.Qxd4#
- 1...Rd5
- 2.Qe2#
- 1...Rf5
- 2.Bxf5#
- 1...Bd3
- 2.Qh1#
- 1...e5
- 2.Sd6#
- 2.Bf5#
- 1...e6
- 2.Sd6#
- 1...Ra2
- Tries
- 1.Kxe7?
- threat
- 2.Sd6#
- 1...Rd4
- 2.Qxd4#
- 1...Bd3
- 2.Qh1#
- 1...Rd5
- 2.Qe2#
- 1...Re5+!
- threat
- 1.Sb4?
- threat
- 2.Qxg4#
- 1...Rf5
- 2.Bxf5#
- 1...Rxb4!
- threat
- 1.Se5?
- threat
- 2.Bf5#
- 1...Rd4
- 2.Qh1#
- 1...Bd3
- 2.Qxd3#
- 1...Rd5
- 2.Qxg4#
- 1...e6
- 2.Sd6#
- 1...Rxe5!
- threat
- 1.Sb6?
- threat
- 2.Qe2#
- 1...Ra2
- 2.Qd4#
- 1...Ra3
- 2.Qd4#
- 1...Bd3
- 2.Qxg4#
- 2.Qh1#
- 1...Sc2!
- threat
- 1.S8xe7?
- threat
- 2.Qe2#
- 1...Ra2
- 2.Qd4#
- 1...Ra3
- 2.Qd4#
- 1...Bd3
- 2.Qxg4#
- 2.Qh1#
- 1...Sc2!
- threat
- 1.Be5?
- threat
- 2.Bf5#
- 1...Rd4
- 2.Qxd4#
- 1...Bd3
- 2.Qh1#
- 1...Rd5
- 2.Qe2#
- 1...e6
- 2.Sd6#
- 1...Rxe5!
- threat
- 1.Bxg4?
- threat
- 2.Bf3#
- 2.Qf3#
- 1...Rd4+
- 2.Qxd4#
- 1...Ra3
- 2.Qd4#
- 1...Rf5
- 2.Bxf5#
- 1...Rd5+!
- threat
- 1.Be6?
- threat
- 2.Qe2#
- 1...Rd4+
- 2.Qxd4#
- 1...Rd5+
- 2.Bxd5#
- 2.Qxd5#
- 1...Ra2
- 2.Qd4#
- 1...Ra3
- 2.Qd4#
- 1...Bd3
- 2.Qxg4#
- 2.Qh1#
- 1...Sc2!
- threat
- 1.f3+?
- 1...gxf3
- 2.Qxf3#
- 1...Ke3!
- 1...gxf3
- 1.Kxe7?
- Keys
- 1.S6xe7!
- threat
- 2.Sd6#
- 1...Bd3
- 2.Qxg4#
- 1...Rd4
- 2.Qe2#
- 1...Rd5
- 2.Qxd5#
- threat
- 1.S6xe7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 0
- REMOVED MATES = 4
- Sets
- R(c);N_GUARD::QAR1(A)
- R(c);N_GUARD,P_PINB(E)::QAR1(A),XR(c)
- R(f);P_PINB(E),SBLOCK::QAR2(A)
- R(f);N_GUARD::B(E),XR(f)
- B(b);SBLOCK::QAB(A)
- P(i);N_GUARD::S(F)
- Tries
- Try
- K(G);S_FLIGHT,XP(i)
- Threat
- S(F)
- Vars
- R(c);N_GUARD::QAR1(A),XR(c)
- B(b);SBLOCK::QAB(A)
- R(f);SBLOCK::QAR2(A)
- Refutation
- R(f);CHECK
- Try
- S(D);
- Threat
- QAR2(A),XP(e)
- Vars
- R(f);N_GUARD::B(E),XR(f)
- Refutation
- R(c);XS(D)
- Try
- S(D);
- Threat
- B(E)
- Vars
- R(c);P_PINB(E),SBLOCK::QAB(A)
- B(b);N_GUARD::QAB1(A),XB(b)
- R(f);P_PINB(E),SBLOCK::QAR2(A),XP(e)
- P(i);N_GUARD::S(F)
- Refutation
- R(f);XS(D)
- Try
- S(F);
- Threat
- QAR2(A)
- Vars
- R(c);N_GUARD::QAR1(A)
- Refutation
- S(a);
- Try
- S(F);XP(i)
- Threat
- QAR2(A)
- Vars
- R(c);N_GUARD::QAR1(A)
- Refutation
- S(a);
- Try
- B(C);
- Threat
- B(E)
- Vars
- R(c);N_GUARD,P_PINB(E)::QAR1(A),XR(c)
- B(b);SBLOCK::QAB(A)
- R(f);P_PINB(E),SBLOCK::QAR2(A)
- P(i);N_GUARD::S(F)
- Refutation
- R(f);XB(C)
- Try
- B(E);XP(e)
- Threat
- DUALS(2)
- Vars
- R(c);CHECK,N_GUARD::QAR1(A),XR(c)
- R(c);N_GUARD::QAR1(A)
- R(f);N_GUARD::B(E),XR(f)
- Refutation
- R(f);CHECK
- Try
- B(E);
- Threat
- QAR2(A)
- Vars
- R(c);CHECK,N_GUARD::QAR1(A),XR(c)
- R(c);N_GUARD::QAR1(A)
- Refutation
- S(a);
- Try
- P(B);CHECK
- Vars
- P(e);OGATE,XP(B)::QAB1(A),XP(e)
- Refutation
- K(d);P-FLIGHT
- Try
- Actual
- S(D);XP(i)
- Threat
- S(F)
- Vars
- B(b);SBLOCK::QAR2(A),XP(e)
- R(c);P_PINB(E),SBLOCK::QAR2(A)
- R(f);N_GUARD,P_PINB(E)::QAB1(A),XR(f)
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