MESON Chess Problem Database

Problem Display
PID: 265306 (2K2BB1/8/1b3p1Q/2pNk1p1/2R1P1p1/6pn/4R3/5r2 w - - 0 1)

Gebura, Stanislaw

The Problemist, 1994

2K2BB1/8/1b3p1Q/2pNk1p1/2R1P1p1/6pn/4R3/5r2

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Qxf6#
    • 1...Rb1
      • 2.Qxf6#
    • 1...Rc1
      • 2.Qxf6#
    • 1...Rd1
      • 2.Qxf6#
    • 1...Re1
      • 2.Qxf6#
    • 1...Rg1
      • 2.Qxf6#
    • 1...Rh1
      • 2.Qxf6#
    • 1...Sf2
      • 2.Qxf6#
    • 1...Sf4
      • 2.Qxf6#
    • 1...f5
      • 2.Bd6#
      • 2.Bg7#
      • 2.Qg7#
      • 2.Qd6#
      • 2.Qe6#
      • 2.Qf6#
      • 2.Qh8#
  • Tries
    • 1.Qg7?
      • threat
        • 2.Qe7#
      • 1...Sf4
        • 2.Qxf6#
      • 1...Bd8!
    • 1.Qg6?
      • threat
        • 2.Qe8#
      • 1...Sf4
        • 2.Qf5#
        • 2.Qxf6#
      • 1...Bd8!
    • 1.Qh7?
      • threat
        • 2.Qe7#
      • 1...Sf4
        • 2.Qf5#
      • 1...Bd8!
  • Keys
    • 1.Se7!
      • threat
        • 2.Sg6#
      • 1...Kf4
        • 2.Qxf6#
      • 1...Kd6
        • 2.e5#
      • 1...Sf4
        • 2.Sc6#
      • 1...f5
        • 2.exf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 8
  • Sets
    • R(a);N_GUARD::QAB1(E),XP(i)
    • S(c);S_CUTR(a)::QAB1(E),XP(i)
  • Tries
    • Try
      • Q(E);P_PINP(i)
      • Threat
        • QAR2(E)
      • Vars
        • S(c);S_CUTR(a)::QAB1(E),XP(i)
      • Refutation
        • B(h);
    • Try
      • Q(E);
      • Threat
        • QAR(E)
      • Refutation
        • B(h);
    • Try
      • Q(E);
      • Threat
        • QAR2(E)
      • Vars
        • S(c);S_CUTR(a)::QAR1(E)
      • Refutation
        • B(h);
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • K(f);N_GUARD,P_SPINP(g),S_CUTR(a),S_FLIGHT::QAR2(E),XP(i)
      • K(f);OGATE,P_SPINP(i),S_FLIGHT::P(C)
      • S(c);SBLOCK::S(D)
      • P(i);OGATE::R(A)+P(C),XP(i)
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