MESON Chess Problem Database

Problem Display
PID: 199847 (8/4P1p1/4PP1P/RN1BkpQ1/1N6/B7/1pPpK3/2qrb3 w - - 0 1)

Kopaev, Viacheslav Georgievich

Suomen Shakki, 1989

8/4P1p1/4PP1P/RN1BkpQ1/1N6/B7/1pPpK3/2qrb3

#2

12 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...gxf6
      • 2.Qe3#
  • Tries
    • 1.Sd4?
      • threat
        • 2.Sbc6#
      • 1...Kxd4
        • 2.Qe3#
      • 1...Kd6
        • 2.Qf4#
      • 1...Qxc2!
    • 1.Sd6?
      • threat
        • 2.Sc6#
      • 1...Kd4
        • 2.Qe3#
      • 1...Kxd6
        • 2.Qf4#
      • 1...Qxc2!
    • 1.Sa7?
      • threat
        • 2.Sbc6#
      • 1...Kd4
        • 2.Qe3#
      • 1...Kd6
        • 2.Qf4#
      • 1...Qxc2!
    • 1.Sc7?
      • threat
        • 2.Sc6#
      • 1...Kd4
        • 2.Qe3#
      • 1...Kd6
        • 2.Qf4#
      • 1...Qxc2!
    • 1.Be4?
      • threat
        • 2.Qxf5#
      • 1...Kxe4
        • 2.Qe3#
      • 1...Kxe6
        • 2.e8Q#
      • 1...g6!
    • 1.Qg1?
      • threat
        • 2.Qd4#
      • 1...Kf4
        • 2.Sd3#
      • 1...Kxf6
        • 2.Qxg7#
      • 1...f4
        • 2.Qg5#
      • 1...Bf2!
    • 1.Qg3+?
      • 1...Kxf6
        • 2.Qxg7#
      • 1...f4
        • 2.Qg5#
      • 1...Bxg3!
    • 1.c4?
      • threat
        • 2.Sd3#
        • 2.Sc6#
      • 1...b1Q
        • 2.Sc6#
      • 1...b1B
        • 2.Sc6#
      • 1...Qb1
        • 2.Sc6#
      • 1...Qc2
        • 2.Sc6#
      • 1...Qc3
        • 2.Sc6#
      • 1...Qxc4+!
  • Keys
    • 1.Sc3!
      • threat
        • 2.Sc6#
      • 1...Kd4
        • 2.Qe3#
      • 1...Kd6
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(h);SBLOCK,XP(J)::QAR2(H)
  • Tries
    • Try
      • S(F);
      • Threat
        • S(D)
      • Vars
        • K(f);N_SPINP(g),S_FLIGHT,XS(F)::QAB1(H)
        • K(f);N_SPINP(g),S_FLIGHT::QAB(H)
      • Refutation
        • Q(a);XP(A)
    • Try
      • S(F);
      • Threat
        • S(D)
      • Vars
        • K(f);N_SPINP(g),S_FLIGHT::QAB1(H)
        • K(f);N_SPINP(g),S_FLIGHT,XS(F)::QAB(H)
      • Refutation
        • Q(a);XP(A)
    • Try
      • S(F);
      • Threat
        • S(D)
      • Vars
        • K(f);N_SPINP(g),S_FLIGHT::QAB1(H)
        • K(f);N_SPINP(g),S_FLIGHT::QAB(H)
      • Refutation
        • Q(a);XP(A)
    • Try
      • S(F);
      • Threat
        • S(D)
      • Vars
        • K(f);N_SPINP(g),S_FLIGHT::QAB1(H)
        • K(f);N_SPINP(g),S_FLIGHT::QAB(H)
      • Refutation
        • Q(a);XP(A)
    • Try
      • B(G);
      • Threat
        • QAR1(H),XP(g)
      • Vars
        • K(f);N_SPINP(g),OGATEB,P-FLIGHT,XB(G)::QAR1(H)
        • K(f);N_SPINP(g),P-FLIGHT,XP(I)::P=Q
      • Refutation
        • P(h);
    • Try
      • Q(H);N_PINP(g)
      • Threat
        • QAB1(H)
      • Vars
        • K(f);S_FLIGHT::S(D)
        • K(f);OGATEB,S_FLIGHT,XP(J)::QAB1(H),XP(h)
        • P(g);OGATEB::QAR2(H)
      • Refutation
        • B(c);
    • Try
      • Q(H);CHECK,N_PINP(g)
      • Vars
        • K(f);OGATEB,S_FLIGHT,XP(J)::QAB1(H),XP(h)
        • P(g);OGATEB,P_SPINP(g)::QAR2(H)
      • Refutation
        • B(c);XQ(H)
    • Try
      • P(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(d);::S(D)
        • Q(a);::S(D)
      • Refutation
        • Q(a);CHECK,XP(A)
  • Actual
    • S(F);
    • Threat
      • S(D)
    • Vars
      • K(f);N_SPINP(g),S_FLIGHT::QAB1(H)
      • K(f);N_SPINP(g),S_FLIGHT::QAB(H)
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