MESON Chess Problem Database

Problem Display
PID: 43258 (n7/1P3Kp1/1B2R3/1pbkN3/qP4pr/1n4p1/2Qp4/8 w - - 0 1)

Kopaev, Viacheslav Georgievich

Probleemblad, 2002

n7/1P3Kp1/1B2R3/1pbkN3/qP4pr/1n4p1/2Qp4/8

#2

7 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qd3#
    • 1...Bg1
      • 2.Qc6#
    • 1...Bf2
      • 2.Qc6#
    • 1...Be3
      • 2.Qc6#
    • 1...Bxb4
      • 2.Qc6#
    • 1...Bd4
      • 2.Qc6#
    • 1...Bd6
      • 2.Qc6#
    • 1...Be7
      • 2.Qc6#
    • 1...Bf8
      • 2.Qc6#
  • Tries
    • 1.Sf3?
      • threat
        • 2.Qe4#
      • 1...Qxb4
        • 2.bxa8Q#
        • 2.bxa8B#
      • 1...Bd4
        • 2.Qc6#
      • 1...Sd4
        • 2.Qxc5#
      • 1...gxf3!
    • 1.Sc6?
      • threat
        • 2.Qe4#
      • 1...Bd4
        • 2.Se7#
      • 1...Sd4
        • 2.Qxc5#
      • 1...Qxb4!
    • 1.bxa8Q+?
      • 1...Kd4
        • 2.Qd3#
        • 2.Qae4#
      • 1...Qxa8!
    • 1.bxa8B+?
      • 1...Kd4
        • 2.Qd3#
      • 1...Qxa8!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Qe4#
      • 1...Kd4
        • 2.Rd6#
      • 1...Bd4
        • 2.Rd6#
      • 1...Sd4
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • K(i);P-FLIGHT,P_SPINB(h)::QAR1(A)
    • B(h);OGATE::QAB1(A)
    • B(h);OGATE,XP(B)::QAB1(A)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAB1(A)
      • Vars
        • Q(d);N_GUARD,XP(B)::PXS(k)=Q
        • B(h);OGATE::QAB1(A)
        • S(b);N_GUARD::QAR1(A),XB(h)
      • Refutation
        • P(e);XS(C)
    • Try
      • S(C);
      • Threat
        • QAB1(A)
      • Vars
        • B(h);N_GUARD::S(C)
        • S(b);N_GUARD::QAR1(A),XB(h)
      • Refutation
        • Q(d);XP(B)
    • Try
      • P(F);CHECK,XS(k)
      • Refutation
        • Q(d);XQ(F)
    • Try
      • P(F);CHECK,XS(k)
      • Vars
        • K(i);P-FLIGHT,P_SPINB(h)::QAR1(A)
      • Refutation
        • Q(d);XB(F)
  • Actual
    • S(C);
    • Threat
      • QAB1(A)
    • Vars
      • K(i);P-FLIGHT,P_SPINB(h)::R(E)
      • B(h);N_GUARD::R1(E)
      • S(b);SBLOCK,S_CUTB(h)::S(C)
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