MESON Chess Problem Database
Problem Display
PID: 255936 (3r4/1pr2RB1/4PN1b/2pp3B/2Pp4/NQPkp1R1/8/2K1nb2 w - - 0 1)
Egorov, Gennady Sergeevich
Shanshin, Valery Yurevich
Zadachi i Etyudi, 2007
#2
11 + 11
SOLUTION
- SOUND
- Sets
- 1...Be2
- 2.Bg6#
- 1...Sc2
- 2.Qxc2#
- 1...Sg2
- 2.Qc2#
- 1...Sf3
- 2.Qc2#
- 1...dxc3
- 2.Qd1#
- 1...dxc4
- 2.Qxc4#
- 1...Be2
- Tries
- 1.Kd1?
- threat
- 2.Bg6#
- 1...Be2+
- 2.Bxe2#
- 1...Bg2
- 2.Be2#
- 1...Bh3
- 2.Be2#
- 1...dxc3!
- threat
- 1.Kb2?
- threat
- 2.Qd1#
- 1...dxc3+
- 2.Qxc3#
- 1...Kd2
- 2.Qd1#
- 1...Sf3
- 2.Qc2#
- 1...Sc2
- 2.Qxc2#
- 1...Be2!
- threat
- 1.Sb5?
- threat
- 2.cxd4#
- 1...dxc3
- 2.Qxc3#
- 1...dxc4
- 2.Qd1#
- 1...Sf3!
- threat
- 1.Sg4?
- threat
- 2.Sf2#
- 1...Ke2
- 2.Qd1#
- 1...Ke4
- 2.Bg6#
- 1...Sf3
- 2.Qc2#
- 1...Rxf7!
- threat
- 1.Qb1+?
- 1...Sc2
- 2.Qxc2#
- 1...Kxc3!
- 1...Sc2
- 1.Qb2?
- threat
- 2.Bg6#
- 2.Qd2#
- 1...Bg2
- 2.Be2#
- 2.Qd2#
- 1...Bh3
- 2.Be2#
- 2.Qd2#
- 1...Sc2
- 2.Qxc2#
- 1...Sf3
- 2.Bg6#
- 2.Qc2#
- 1...dxc3!
- threat
- 1.cxd5?
- threat
- 2.Qc4#
- 2.c4#
- 1...dxc3
- 2.Qd1#
- 2.Qc4#
- 1...Sf3
- 2.Qc2#
- 2.Qc4#
- 1...b5
- 2.c4#
- 1...c4!
- threat
- 1.Kd1?
- Keys
- 1.Se4!
- threat
- 2.Sf2#
- 1...Kxe4
- 2.Bg6#
- 1...Rxf7
- 2.Sxc5#
- 1...dxe4
- 2.cxd4#
- 1...Sf3
- 2.Qc2#
- threat
- 1.Se4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 5
- Sets
- B(b);SBLOCK::B(G)
- S(a);N_GUARD::QAB1(C),XS(a)
- S(a);N_GUARD::QAB1(C)
- S(a);N_GUARD,N_SPINP(d)::QAB1(C)
- P(e);N_SPINP(d),P_SPINP(e),SBLOCK,XP(D)::QAR2(C)
- P(g);OGATE,XP(F)::QAB1(C),XP(g)
- Tries
- Try
- K(A);P-FLIGHT
- Threat
- B(G)
- Vars
- B(b);CHECK,N_GUARD::B(G),XB(b)
- B(b);N_GUARD::B(G)
- Refutation
- P(e);N_SPINP(d),P_SPINP(e),XP(D)
- Try
- K(A);S_FLIGHT
- Threat
- QAR2(C)
- Vars
- P(e);CHECK,N_SPINP(d),OGATE,P_SPINP(e),XP(D)::QAR1(C),XP(e)
- K(c);N_SPINP(d),P-FLIGHT::QAR1(C)
- S(a);N_GUARD,N_SPINP(d)::QAB1(C)
- S(a);N_GUARD::QAB1(C),XS(a)
- Refutation
- B(b);
- Try
- S(B);
- Threat
- QAR(C)+P(D),XP(e)
- Vars
- P(e);N_SPINP(d),OGATE,P_SPINP(e),XP(D)::QAR1(C),XP(e)
- P(g);SBLOCK,XP(F)::QAR2(C)
- Refutation
- S(a);N_SPINP(d)
- Try
- S(I);
- Threat
- S(I)
- Vars
- K(c);N_GUARD,N_SPINP(d),S_FLIGHT::QAB1(C)
- K(c);N_GUARD,N_SPINP(d),S_FLIGHT::B(G)
- S(a);N_GUARD,N_SPINP(d)::QAB1(C)
- Refutation
- R(j);XR(J)
- Try
- Q(C);CHECK
- Vars
- S(a);N_GUARD,P_SPINS(a)::QAB1(C),XS(a)
- Refutation
- K(c);P-FLIGHT,XP(D)
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- S(a);N_GUARD::QAB1(C),XS(a)
- Refutation
- P(e);XP(D)
- Try
- P(F);XP(g)
- Threat
- DUALS(2)
- Vars
- P(i);::QAR(C)+P(D)
- Refutation
- P(f);
- Try
- Actual
- S(I);
- Threat
- S(I)
- Vars
- K(c);N_SPINP(d),OGATEB,S_FLIGHT,XS(I)::B(G)
- R(j);N_GUARD,XR(J)::S(I),XP(f)
- P(g);SBLOCK,XS(I)::QAR(C)+P(D),XP(e)
- S(a);N_GUARD,N_SPINP(d)::QAB1(C)
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