MESON Chess Problem Database

Problem Display
PID: 252877 (5B2/bP6/2pPp2R/N2pP3/1Rpk3p/P4p1b/1K3P1P/1B4Q1 w - - 0 1)

Labai, Zoltan

Zadachi i Etyudi, 2005

5B2/bP6/2pPp2R/N2pP3/1Rpk3p/P4p1b/1K3P1P/1B4Q1

#2

13 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bc5
      • 2.Sxc6#
    • 1...c5
      • 2.Sc6#
  • Tries
    • 1.Rxc4+?
      • 1...Kxe5
        • 2.Sxc6#
        • 2.Qg7#
      • 1...dxc4!
    • 1.Rxh4+?
      • 1...Kc5
        • 2.d7#
      • 1...Kxe5
        • 2.Qg7#
      • 1...Bg4!
    • 1.Qd1+?
      • 1...Kc5
        • 2.d7#
      • 1...Kxe5!
    • 1.Qg4+?
      • 1...Kc5
        • 2.d7#
      • 1...Kxe5
        • 2.Sxc6#
        • 2.Rxe6#
      • 1...Bxg4!
    • 1.Qg5?
      • threat
        • 2.Sb3#
        • 2.Qe3#
      • 1...Bf5
        • 2.Qe3#
      • 1...Kc5!
    • 1.d7?
      • threat
        • 2.Sxc6#
      • 1...c5
        • 2.Sc6#
      • 1...Kxe5!
  • Keys
    • 1.Qc1!
      • threat
        • 2.Qe3#
      • 1...Kc5
        • 2.Sb3#
      • 1...Kxe5
        • 2.Sxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(i);SBLOCK::S(H),XP(g)
    • P(g);SBLOCK::S(H)
  • Tries
    • Try
      • R(G);CHECK,XP(c)
      • Refutation
        • P(f);XR(G)
    • Try
      • R(K);CHECK,XP(e)
      • Vars
        • K(d);N_GUARD,N_SPINP(c),S_CUTB(b),S_FLIGHT::B(M)+P(J)
        • K(d);N_GUARD,N_SPINP(c),S_CUTB(b),S_FLIGHT,XP(I)::QAB(B)
      • Refutation
        • B(b);P_SPINB(b)
    • Try
      • Q(B);CHECK
      • Vars
        • K(d);N_GUARD,N_SPINP(c),S_FLIGHT::B(M)+P(J)
      • Refutation
        • K(d);N_SPINP(c),S_FLIGHT,XP(I)
    • Try
      • Q(B);CHECK
      • Vars
        • K(d);N_GUARD,N_SPINP(c),S_CUTB(b),S_FLIGHT::B(M)+P(J)
      • Refutation
        • B(b);XQ(B)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • B(b);::QAB1(B)
      • Refutation
        • K(d);N_SPINP(c),S_FLIGHT
    • Try
      • P(J);
      • Threat
        • S(H),XP(g)
      • Vars
        • P(g);::S(H)
      • Refutation
        • K(d);N_SPINP(c),S_FLIGHT,XP(I)
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • K(d);N_GUARD,S_FLIGHT::S(H)
      • K(d);N_GUARD,N_SPINP(c),S_FLIGHT,XP(I)::S(H),XP(g)
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