MESON Chess Problem Database
Problem Display
PID: 274117 (2n2Bb1/2R3N1/3N1kB1/1q1pn1RK/4p3/5rb1/8/Q7 w - - 0 1)
Pankratiev, Aleksandr Nikolaevich
Springaren, 1991
#2
8 + 9
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Sde8#
- 1...Qe2
- 2.Sde8#
- 1...Qd3
- 2.Sde8#
- 1...Qc4
- 2.Sde8#
- 1...Qa6
- 2.Sde8#
- 1...Qe8
- 2.Sdxe8#
- 1...Qb1
- 2.Sde8#
- 1...Qb2
- 2.Sde8#
- 1...Qb3
- 2.Sde8#
- 1...Qb4
- 2.Sde8#
- 1...Qa5
- 2.Sde8#
- 1...Qc5
- 2.Sde8#
- 1...Qb6
- 2.Sde8#
- 1...Qb7
- 2.Sde8#
- 1...Qb8
- 2.Sde8#
- 1...Ra3
- 2.Rf5#
- 1...Rb3
- 2.Rf5#
- 1...Rc3
- 2.Rf5#
- 1...Rd3
- 2.Rf5#
- 1...Re3
- 2.Rf5#
- 1...Rf4
- 2.Qxe5#
- 1...Rf5
- 2.Rxf5#
- 1...Be1
- 2.Qxe5#
- 1...Bf2
- 2.Qxe5#
- 1...Bf4
- 2.Rf5#
- 1...Bh4
- 2.Qxe5#
- 1...Bf7
- 2.Rxf7#
- 1...Bh7
- 2.Rf7#
- 1...d4
- 2.Sxe4#
- 1...Qf1
- Tries
- 1.Bxe4?
- threat
- 2.Rg6#
- 1...Qe8+
- 2.Sdxe8#
- 1...Bf7+
- 2.Rxf7#
- 1...Qb2
- 2.Sde8#
- 1...Rc3
- 2.Rf5#
- 1...Rf5
- 2.Rxf5#
- 1...Bh7
- 2.Rf7#
- 1...Se7
- 2.Bxe7#
- 1...d4!
- threat
- 1.Bf5?
- threat
- 2.Rg6#
- 1...Qe8+
- 2.Sdxe8#
- 2.Sgxe8#
- 1...Bf7+
- 2.Rxf7#
- 1...Rxf5
- 2.Rxf5#
- 1...Qb2
- 2.Sde8#
- 2.Sge8#
- 1...Bh7
- 2.Rf7#
- 1...Se7
- 2.Bxe7#
- 1...d4
- 2.Sxe4#
- 1...Rc3!
- threat
- 1.Bf7?
- threat
- 2.Rg6#
- 1...Bxf7+
- 2.Rxf7#
- 1...Qb2
- 2.Sde8#
- 2.Sge8#
- 1...Rc3
- 2.Rf5#
- 1...Rf5
- 2.Rxf5#
- 1...Se7
- 2.Bxe7#
- 1...d4
- 2.Sxe4#
- 1...Bh7!
- threat
- 1.Be8?
- threat
- 2.Rg6#
- 1...Qxe8+
- 2.Sdxe8#
- 1...Bf7+
- 2.Rxf7#
- 1...Rc3
- 2.Rf5#
- 1...Rf5
- 2.Rxf5#
- 1...Bh7
- 2.Rf7#
- 1...Se7
- 2.Bxe7#
- 1...d4
- 2.Sxe4#
- 1...Qb2!
- threat
- 1.Bxe4?
- Keys
- 1.Bh7!
- threat
- 2.Rg6#
- 1...Qe8+
- 2.Sdxe8#
- 1...Bf7+
- 2.Rxf7#
- 1...Bxh7
- 2.Rf7#
- 1...Qb2
- 2.Sde8#
- 1...Rc3
- 2.Rf5#
- 1...Rf5
- 2.Rxf5#
- 1...Se7
- 2.Bxe7#
- 1...d4
- 2.Sxe4#
- threat
- 1.Bh7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 22
- Sets
- Q(d);N_GUARD::S(D)
- Q(d);N_GUARD,P_PINB(E)::S(D),XQ(d)
- Q(d);N_GUARD,N_SPINS(f)::S(D)
- R(a);N_GUARD::R1(B)
- R(a);N_GUARD,N_SPINS(f)::R1(B)
- R(a);S_CUTB(b)::QAB1(A),XS(f)
- R(a);N_GUARD,P_PINR(B)::R1(B),XR(a)
- B(b);N_GUARD::QAB1(A),XS(f)
- B(b);S_CUTR(a)::R1(B)
- B(i);N_GUARD,P_PINB(E)::R1(F),XB(i)
- B(i);N_GUARD::R1(F)
- P(e);N_GUARD,N_SPINS(f)::S(D),XP(c)
- Tries
- Try
- B(E);XP(c)
- Threat
- R1(B)
- Vars
- Q(d);CHECK,N_GUARD::S(D),XQ(d)
- B(i);CHECK,N_GUARD::R1(F),XB(i)
- Q(d);N_GUARD,N_SPINS(f)::S(D)
- R(a);N_GUARD,N_SPINS(f)::R1(B)
- R(a);N_GUARD,P_PINR(B)::R1(B),XR(a)
- B(i);N_GUARD::R1(F)
- S(h);N_GUARD::B(H),XS(h)
- Refutation
- P(e);N_SPINS(f)
- Try
- B(E);
- Threat
- R1(B)
- Vars
- B(i);CHECK,N_GUARD::R1(F),XB(i)
- R(a);OGATE,P_PINR(B),XB(E)::R1(B),XR(a)
- B(i);N_GUARD::R1(F)
- S(h);N_GUARD::B(H),XS(h)
- P(e);N_GUARD,N_SPINS(f)::S(D),XP(c)
- Refutation
- R(a);N_SPINS(f)
- Try
- B(E);
- Threat
- R1(B)
- Vars
- B(i);CHECK,OGATE,XB(E)::R1(F),XB(i)
- R(a);N_GUARD,N_SPINS(f)::R1(B)
- R(a);N_GUARD,P_PINR(B)::R1(B),XR(a)
- S(h);N_GUARD::B(H),XS(h)
- P(e);N_GUARD,N_SPINS(f)::S(D),XP(c)
- Refutation
- B(i);
- Try
- B(E);
- Threat
- R1(B)
- Vars
- Q(d);CHECK,XB(E)::S(D),XQ(d)
- B(i);CHECK,N_GUARD::R1(F),XB(i)
- R(a);N_GUARD,N_SPINS(f)::R1(B)
- R(a);N_GUARD,P_PINR(B)::R1(B),XR(a)
- B(i);N_GUARD::R1(F)
- S(h);N_GUARD::B(H),XS(h)
- P(e);N_GUARD,N_SPINS(f)::S(D),XP(c)
- Refutation
- Q(d);N_SPINS(f)
- Try
- Actual
- B(E);
- Threat
- R1(B)
- Vars
- Q(d);CHECK,N_GUARD::S(D),XQ(d)
- B(i);CHECK,N_GUARD::R1(F),XB(i)
- B(i);N_GUARD,XB(E)::R1(F)
- Q(d);N_GUARD,N_SPINS(f)::S(D)
- R(a);N_GUARD,N_SPINS(f)::R1(B)
- R(a);N_GUARD,P_PINR(B)::R1(B),XR(a)
- S(h);N_GUARD::B(H),XS(h)
- P(e);N_GUARD,N_SPINS(f)::S(D),XP(c)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).