MESON Chess Problem Database
Problem Display
PID: 165196 (5b2/4r3/3pP3/p1nNpnB1/b2k4/N6R/2R1B3/3K3Q w - - 0 1)
Pozdnakov, G
Sivolotov, Valentin Aleksandrovich
Novi Temi, 1982
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Bxc2+
- 2.Sxc2#
- 1...Bb3
- 2.Sb5#
- 1...Bb5
- 2.Sxb5#
- 1...Bc6
- 2.Rc4#
- 1...Bd7
- 2.Rc4#
- 1...Be8
- 2.Rc4#
- 1...Sb3
- 2.Rc4#
- 2.Rd3#
- 1...Sd3
- 2.Rxd3#
- 1...Se4
- 2.Rd3#
- 1...Sa6
- 2.Rd3#
- 1...Sxe6
- 2.Rd3#
- 1...Sb7
- 2.Rd3#
- 1...Sd7
- 2.Rd3#
- 1...Se3+
- 2.Bxe3#
- 1...Sg3
- 2.Be3#
- 1...Sh4
- 2.Be3#
- 1...Sh6
- 2.Be3#
- 1...Sg7
- 2.Be3#
- 1...Bxc2+
- Tries
- 1.Ke1?
- threat
- 2.Rc4#
- 1...Sd3+
- 2.Rxd3#
- 1...Bxc2
- 2.Sxc2#
- 2.Sb5#
- 1...Se4
- 2.Rd3#
- 1...Bb3
- 2.Sb5#
- 1...Bb5
- 2.Sxb5#
- 1...Se3
- 2.Bxe3#
- 1...e4!
- threat
- 1.Se3?
- threat
- 2.Sxf5#
- 2.Qd5#
- 1...Bxc2+
- 2.Sexc2#
- 1...Sxe3+
- 2.Bxe3#
- 1...e4
- 2.Bf6#
- 1...Rf7
- 2.Qd5#
- 1...Bb3
- 2.Sb5#
- 2.Sxf5#
- 1...Bc6
- 2.Sxf5#
- 2.Rc4#
- 1...Sg3
- 2.Qd5#
- 1...Sh4
- 2.Qd5#
- 1...Sh6
- 2.Qd5#
- 1...Sg7
- 2.Qd5#
- 1...d5
- 2.Sxf5#
- 2.Qxd5#
- 1...Se4!
- threat
- 1.Sb4?
- threat
- 2.Qd5#
- 1...Bxc2+
- 2.Saxc2#
- 2.Sbxc2#
- 1...Se3+
- 2.Bxe3#
- 1...e4
- 2.Bf6#
- 1...Bb3
- 2.Sb5#
- 2.Sc6#
- 1...Bc6
- 2.Sxc6#
- 2.Rc4#
- 1...Se4
- 2.Rd3#
- 1...d5
- 2.Qxd5#
- 1...axb4!
- threat
- 1.Sf6?
- threat
- 2.Qd5#
- 1...Bxc2+
- 2.Sxc2#
- 1...Se3+
- 2.Bxe3#
- 1...Bb3
- 2.Sb5#
- 1...Bc6
- 2.Rc4#
- 1...Se4
- 2.Rd3#
- 2.Qxe4#
- 1...d5
- 2.Qxd5#
- 1...e4!
- threat
- 1.Sc7?
- threat
- 2.Qd5#
- 1...Bxc2+
- 2.Sxc2#
- 1...Se3+
- 2.Bxe3#
- 1...e4
- 2.Bf6#
- 1...Bb3
- 2.Sab5#
- 2.Scb5#
- 1...Bc6
- 2.Rc4#
- 1...Se4
- 2.Rd3#
- 1...d5
- 2.Qxd5#
- 1...Rxc7!
- threat
- 1.Sxe7?
- threat
- 2.Sxf5#
- 2.Qd5#
- 1...Bxc2+
- 2.Sxc2#
- 1...Se3+
- 2.Bxe3#
- 1...Sxe7
- 2.Be3#
- 1...e4
- 2.Bf6#
- 1...Bb3
- 2.Sb5#
- 2.Sxf5#
- 2.Sc6#
- 1...Bc6
- 2.Sxf5#
- 2.Sxc6#
- 2.Rc4#
- 1...Se4
- 2.Rd3#
- 1...Sg3
- 2.Qd5#
- 1...Sh4
- 2.Be3#
- 2.Qd5#
- 1...Sh6
- 2.Be3#
- 2.Qd5#
- 1...Sg7
- 2.Be3#
- 2.Qd5#
- 1...d5
- 2.Sxf5#
- 2.Qxd5#
- 1...Bxe7!
- threat
- 1.Bd2?
- threat
- 2.Bc3#
- 1...Bxc2+
- 2.Sxc2#
- 1...Se3+
- 2.Bxe3#
- 1...Sxe6
- 2.Rd3#
- 1...Se4
- 2.Rd3#
- 1...Sb3
- 2.Rc4#
- 2.Rd3#
- 1...Sd3
- 2.Rxd3#
- 1...Sa6
- 2.Rd3#
- 1...Sb7
- 2.Rd3#
- 1...Sd7
- 2.Rd3#
- 1...e4!
- threat
- 1.Rb3?
- threat
- 2.Rc4#
- 1...Se3+
- 2.Bxe3#
- 1...Bxb3
- 2.Sb5#
- 1...Se4
- 2.Rd3#
- 1...Bb5
- 2.Sxb5#
- 1...e4!
- threat
- 1.Rc3?
- threat
- 2.Rc4#
- 1...Bxc2+
- 2.Sxc2#
- 1...Se3+
- 2.Bxe3#
- 1...Se4
- 2.Rd3#
- 1...Bb3
- 2.Sb5#
- 1...Bb5
- 2.Sxb5#
- 1...e4!
- threat
- 1.Rh4+?
- 1...Se4
- 2.Qxe4#
- 1...Sxh4
- 2.Be3#
- 1...e4!
- 1...Se4
- 1.Qe4+?
- 1...Sxe4
- 2.Rd3#
- 1...Kxe4!
- 1...Sxe4
- 1.Ke1?
- Keys
- 1.Sb6!
- threat
- 2.Qd5#
- 1...Bxc2+
- 2.Sxc2#
- 1...Se3+
- 2.Bxe3#
- 1...e4
- 2.Bf6#
- 1...Bb3
- 2.Sb5#
- 1...Bc6
- 2.Rc4#
- 1...Se4
- 2.Rd3#
- 1...d5
- 2.Qxd5#
- threat
- 1.Sb6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 12
- Sets
- B(a);CHECK,XR(C)::S(E),XB(a)
- B(a);N_GUARD::S(E)
- B(a);N_GUARD,N_PINR(C)::S(E),XB(a)
- B(a);N_PINR(C)::R1(C)
- S(d);N_GUARD::R1(F),XS(d)
- S(d);N_GUARD::R1(F)
- S(d);N_GUARD,XP(I)::R1(F)
- S(f);CHECK,N_GUARD::B(H),XS(f)
- S(f);N_GUARD::B(H)
- Tries
- Try
- K(A);N_SPINR(C),P-FLIGHT
- Threat
- R1(C)
- Vars
- S(d);CHECK,N_GUARD::R1(F),XS(d)
- S(d);N_GUARD::R1(F)
- B(a);N_GUARD::S(E)
- B(a);N_GUARD::S(E),XB(a)
- S(f);N_GUARD::B(H),XS(f)
- Refutation
- P(e);
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- B(a);CHECK,XR(C)::S(G),XB(a)
- S(f);CHECK,OGATE,XS(G)::B(H),XS(f)
- P(e);OGATEB::B(H)
- R(h);::QAR1(B)
- S(f);::QAR1(B)
- Refutation
- S(d);
- Try
- S(G);
- Threat
- QAR1(B)
- Vars
- S(f);CHECK,N_GUARD::B(H),XS(f)
- P(e);OGATEB::B(H)
- S(d);N_GUARD::R1(F)
- P(g);::QAR1(B),XP(g)
- Refutation
- P(c);XS(G)
- Try
- S(G);
- Threat
- QAR1(B)
- Vars
- B(a);CHECK,XR(C)::S(E),XB(a)
- S(f);CHECK,N_GUARD::B(H),XS(f)
- B(a);N_GUARD::S(E)
- B(a);N_PINR(C)::R1(C)
- P(g);::QAR1(B),XP(g)
- Refutation
- P(e);
- Try
- S(G);
- Threat
- QAR1(B)
- Vars
- B(a);CHECK,XR(C)::S(E),XB(a)
- S(f);CHECK,N_GUARD::B(H),XS(f)
- P(e);OGATEB::B(H)
- B(a);N_PINR(C)::R1(C)
- S(d);N_GUARD::R1(F)
- P(g);::QAR1(B),XP(g)
- Refutation
- R(h);XS(G)
- Try
- S(G);XR(h)
- Threat
- DUALS(2)
- Vars
- B(a);CHECK,XR(C)::S(E),XB(a)
- S(f);CHECK,N_GUARD::B(H),XS(f)
- S(f);N_GUARD,XS(G)::B(H)
- P(e);OGATEB::B(H)
- S(d);N_GUARD::R1(F)
- S(f);::QAR1(B)
- Refutation
- B(i);XS(G)
- Try
- B(H);
- Threat
- B(H)
- Vars
- B(a);CHECK,XR(C)::S(E),XB(a)
- S(f);CHECK,N_GUARD::B(H),XS(f)
- S(d);N_GUARD,XP(I)::R1(F)
- S(d);N_GUARD::R1(F)
- S(d);N_GUARD::R1(F),XS(d)
- Refutation
- P(e);
- Try
- R(F);N_SPINR(C)
- Threat
- R1(C)
- Vars
- S(f);CHECK,N_GUARD::B(H),XS(f)
- B(a);N_GUARD,P_PINR(C),XR(F)::S(E)
- S(d);N_GUARD::R1(F)
- B(a);N_GUARD::S(E),XB(a)
- Refutation
- P(e);
- Try
- R(F);
- Threat
- R1(F)
- Vars
- B(a);CHECK,XR(C)::S(E),XB(a)
- S(f);CHECK,N_GUARD::B(H),XS(f)
- S(d);N_GUARD::R1(F)
- B(a);N_GUARD::S(E)
- B(a);N_GUARD,N_PINR(C)::S(E),XB(a)
- Refutation
- P(e);
- Try
- R(F);CHECK
- Vars
- S(d);N_GUARD,P_SPINS(d)::QAR1(B),XS(d)
- S(f);XR(F)::B(H)
- Refutation
- P(e);P_SPINP(e)
- Try
- Q(B);CHECK
- Vars
- S(d);SBLOCK,XQ(B)::R1(F)
- Refutation
- K(b);P-FLIGHT,XQ(B)
- Try
- Actual
- S(G);
- Threat
- QAR1(B)
- Vars
- B(a);CHECK,XR(C)::S(E),XB(a)
- S(f);CHECK,N_GUARD::B(H),XS(f)
- P(e);OGATEB::B(H)
- B(a);N_GUARD::S(E)
- B(a);N_PINR(C)::R1(C)
- S(d);N_GUARD::R1(F)
- P(g);::QAR1(B),XP(g)
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