MESON Chess Problem Database
Problem Display
PID: 88489 (1N1R4/K7/3n4/3k1Pp1/1p1P1b2/3Q1P2/prP5/B6B w - - 0 1)
Gulyaev, Aleksandr Pavlovich (aka Grin, AP)
The Problemist, 1975
#2
10 + 7
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Qb5#
- 1...Rb3
- 2.Qb5#
- 2.Qxb3#
- 1...Bc1
- 2.f4#
- 1...Bd2
- 2.f4#
- 1...Bh2
- 2.f4#
- 1...Be3
- 2.f4#
- 1...Bg3
- 2.f4#
- 1...Be5
- 2.f4#
- 1...b3
- 2.c4#
- 1...g4
- 2.fxg4#
- 1...Rb1
- Tries
- 1.Ka6?
- 1...Rb1
- 2.Qb5#
- 1...Rb3
- 2.Qb5#
- 2.Qxb3#
- 1...Bc1
- 2.f4#
- 1...Bd2
- 2.f4#
- 1...Bh2
- 2.f4#
- 1...Be3
- 2.f4#
- 1...Bg3
- 2.f4#
- 1...Be5
- 2.f4#
- 1...b3
- 2.c4#
- 1...g4
- 2.fxg4#
- 1...Rxc2!
- 1...Rb1
- 1.Kb6?
- 1...Rb1
- 2.Qb5#
- 1...Rb3
- 2.Qb5#
- 2.Qxb3#
- 1...Bc1
- 2.f4#
- 1...Bd2
- 2.f4#
- 1...Bh2
- 2.f4#
- 1...Be3
- 2.f4#
- 1...Bg3
- 2.f4#
- 1...Be5
- 2.f4#
- 1...b3
- 2.c4#
- 1...g4
- 2.fxg4#
- 1...Rxc2!
- 1...Rb1
- 1.Ka8?
- 1...Rb1
- 2.Qb5#
- 1...Rb3
- 2.Qb5#
- 2.Qxb3#
- 1...Bc1
- 2.f4#
- 1...Bd2
- 2.f4#
- 1...Bh2
- 2.f4#
- 1...Be3
- 2.f4#
- 1...Bg3
- 2.f4#
- 1...Be5
- 2.f4#
- 1...b3
- 2.c4#
- 1...g4
- 2.fxg4#
- 1...Rxc2!
- 1...Rb1
- 1.Sc6?
- threat
- 2.Se7#
- 2.Qb5#
- 1...Rxc2
- 2.Sxb4#
- 2.Se7#
- 1...Kxc6!
- threat
- 1.Bg2?
- 1...Rb1
- 2.Qb5#
- 1...Rb3
- 2.Qb5#
- 2.Qxb3#
- 1...Bc1
- 2.f4#
- 1...Bd2
- 2.f4#
- 1...Bh2
- 2.f4#
- 1...Be3
- 2.f4#
- 1...Bg3
- 2.f4#
- 1...Be5
- 2.f4#
- 1...b3
- 2.c4#
- 1...g4
- 2.fxg4#
- 1...Rxc2!
- 1...Rb1
- 1.Rxd6+?
- 1...Bxd6
- 2.f4#
- 1...Kxd6!
- 1...Bxd6
- 1.Rd7?
- 1...Rb1
- 2.Qb5#
- 1...Rb3
- 2.Qb5#
- 2.Qxb3#
- 1...Bc1
- 2.f4#
- 1...Bd2
- 2.f4#
- 1...Bh2
- 2.f4#
- 1...Be3
- 2.f4#
- 1...Bg3
- 2.f4#
- 1...Be5
- 2.f4#
- 1...b3
- 2.c4#
- 1...g4
- 2.fxg4#
- 1...Rxc2!
- 1...Rb1
- 1.c3?
- threat
- 2.Qb5#
- 2.c4#
- 1...Rc2
- 2.Qb5#
- 1...bxc3!
- threat
- 1.Ka6?
- Keys
- 1.Sa6!
- 1...Kc6
- 2.d5#
- 1...Rxc2
- 2.Sxb4#
- 1...Rb1
- 2.Qb5#
- 1...Rb3
- 2.Qb5#
- 1...Bc1
- 2.f4#
- 1...Bd2
- 2.f4#
- 1...Bh2
- 2.f4#
- 1...Be3
- 2.f4#
- 1...Bg3
- 2.f4#
- 1...Be5
- 2.f4#
- 1...b3
- 2.Sb4#
- 1...g4
- 2.fxg4#
- 1...Kc6
- 1.Sa6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- R(b);::QAR2(D)
- B(d);OGATE::B(B)+P(E)
- B(d);OGATE,P_PINP(F)::B(B)+P(E)
- P(c);N_GUARD::P(C)
- P(f);OGATE::B(B)+P(E),XP(f)
- Tries
- Try
- K(H);P-FLIGHT
- Vars
- R(b);::QAR2(D)
- B(d);OGATE::B(B)+P(E)
- P(c);N_GUARD::P(C)
- P(f);OGATE::B(B)+P(E),XP(f)
- Refutation
- R(b);XP(C)
- Try
- K(H);S_FLIGHT
- Vars
- R(b);::QAR2(D)
- B(d);OGATE::B(B)+P(E)
- B(d);OGATE,P_PINP(F)::B(B)+P(E)
- P(c);N_GUARD::P(C)
- P(f);OGATE::B(B)+P(E),XP(f)
- Refutation
- R(b);XP(C)
- Try
- K(H);P-FLIGHT
- Vars
- R(b);::QAR2(D)
- B(d);OGATE::B(B)+P(E)
- P(c);N_GUARD::P(C)
- P(f);OGATE::B(B)+P(E),XP(f)
- Refutation
- R(b);XP(C)
- Try
- S(I);
- Threat
- DUALS(2)
- Refutation
- K(e);N_SPINS(g),S_FLIGHT,XS(I)
- Try
- B(B);
- Vars
- R(b);::QAR2(D)
- B(d);OGATE::B(B)+P(E)
- B(d);OGATE,P_PINP(F)::B(B)+P(E)
- P(c);N_GUARD::P(C)
- P(f);OGATE::B(B)+P(E),XP(f)
- Refutation
- R(b);XP(C)
- Try
- R(J);CHECK,XS(g)
- Vars
- B(d);OGATE,SBLOCK,XR(J)::B(B)+P(E)
- Refutation
- K(e);P-FLIGHT,XR(J)
- Try
- R(J);
- Vars
- R(b);::QAR2(D)
- B(d);OGATE::B(B)+P(E)
- B(d);OGATE,P_PINP(F)::B(B)+P(E)
- P(c);N_GUARD::P(C)
- P(f);OGATE::B(B)+P(E),XP(f)
- Refutation
- R(b);XP(C)
- Try
- P(C);
- Threat
- DUALS(2)
- Vars
- R(b);::QAR2(D)
- Refutation
- P(c);XP(C)
- Try
- Actual
- S(I);
- Vars
- K(e);N_SPINS(g),OGATE,S_FLIGHT::P(F)
- R(b);N_GUARD,XP(C)::S(I),XP(c)
- R(b);::QAR2(D)
- B(d);OGATE::B(B)+P(E)
- B(d);OGATE,P_PINP(F)::B(B)+P(E)
- P(c);S_CUTR(b)::S(I)
- P(f);OGATE::B(B)+P(E),XP(f)
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