MESON Chess Problem Database

Problem Display
PID: 251019 (2K3R1/2P1N2n/1Q3p2/1p2k1P1/6P1/R2B1pbP/2p2N1B/1q3n2 w - - 0 1)

Sukhitashvili, Sergey Nikolaevich

Probleemblad, 1981

2K3R1/2P1N2n/1Q3p2/1p2k1P1/6P1/R2B1pbP/2p2N1B/1q3n2

#2

12 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Qd4#
    • 1...Sd2
      • 2.Bxg3#
    • 1...Se3
      • 2.Bxg3#
    • 1...Sf8
      • 2.Qxf6#
  • Tries
    • 1.Se4?
      • threat
        • 2.Qd6#
      • 1...Kf4
        • 2.Sg6#
      • 1...Qb4!
    • 1.Bxh7?
      • threat
        • 2.Sd3#
        • 2.Qxf6#
      • 1...Kf4
        • 2.Sd3#
        • 2.Qd4#
        • 2.Qd6#
        • 2.Qxf6#
      • 1...fxg5
        • 2.Sd3#
      • 1...c1Q
        • 2.Qxf6#
      • 1...c1S
        • 2.Qxf6#
      • 1...c1B
        • 2.Qxf6#
      • 1...c1R
        • 2.Qxf6#
      • 1...Qd1
        • 2.Qxf6#
      • 1...Qb3
        • 2.Qxf6#
      • 1...f5!
    • 1.Ra6?
      • threat
        • 2.Qd6#
      • 1...Kf4
        • 2.Qd4#
      • 1...Qb4!
    • 1.Rd8?
      • threat
        • 2.Sg6#
        • 2.Qd6#
      • 1...Qb4
        • 2.Sg6#
      • 1...Sf8
        • 2.Qd6#
        • 2.Qxf6#
      • 1...Kf4!
    • 1.Qe3+?
      • 1...Kd6
        • 2.Ra6#
        • 2.Rd8#
      • 1...Sxe3!
    • 1.Qc5+?
      • 1...Kf4
        • 2.Sg6#
        • 2.Qd4#
      • 1...Ke6!
  • Keys
    • 1.Be4!
      • threat
        • 2.Sg6#
      • 1...Kf4
        • 2.Qd6#
      • 1...Sf8
        • 2.Qxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • K(g);N_GUARD,S_FLIGHT::QAR2(H)
    • S(b);N_GUARD::B(B),XB(e)
    • S(i);N_GUARD::QAB1(H),XP(h)
  • Tries
    • Try
      • S(A);
      • Threat
        • QAB1(H)
      • Vars
        • K(g);N_GUARD,S_FLIGHT::S(J)
      • Refutation
        • Q(a);
    • Try
      • B(D);XS(i)
      • Threat
        • DUALS(2)
      • Vars
        • P(h);XP(G)::S(A)
        • P(c);P_PINP(I)::QAB1(H),XP(h)
        • P(c);::QAB1(H),XP(h)
        • Q(a);::QAB1(H),XP(h)
      • Refutation
        • P(h);
    • Try
      • R(C);
      • Threat
        • QAB1(H)
      • Vars
        • K(g);N_GUARD,S_FLIGHT::QAR2(H)
      • Refutation
        • Q(a);
    • Try
      • R(L);
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);::S(J)
      • Refutation
        • K(g);S_FLIGHT
    • Try
      • Q(H);CHECK
      • Refutation
        • S(b);XQ(H)
    • Try
      • Q(H);CHECK
      • Refutation
        • K(g);N_SPINB(e),P-FLIGHT
  • Actual
    • B(D);
    • Threat
      • S(J)
    • Vars
      • K(g);N_GUARD,S_FLIGHT::QAB(H)
      • S(i);N_GUARD::QAB1(H),XP(h)
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