MESON Chess Problem Database

Problem Display
PID: 109022 (4R3/4r3/1P4Q1/3P1n2/4Np1n/RBB1k2N/4P1b1/3K4 w - - 0 1)

Mucha, Boris I

Zpravodaj Kotva, 1967

4R3/4r3/1P4Q1/3P1n2/4Np1n/RBB1k2N/4P1b1/3K4

#2

11 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe4
      • 2.Rxe7#
    • 1...Bxe4
      • 2.Qg1#
    • 1...Sd4
      • 2.Bd2#
  • Tries
    • 1.Ba1?
      • threat
        • 2.Bc2#
      • 1...Kxe4
        • 2.Rxe7#
      • 1...Bxe4
        • 2.Qg1#
      • 1...Ra7
        • 2.Ba4#
      • 1...Rc7
        • 2.Bc4#
      • 1...Sd4!
  • Keys
    • 1.Bb2!
      • threat
        • 2.Bc2#
      • 1...Kxe4
        • 2.Rxe7#
      • 1...Bxe4
        • 2.Qg1#
      • 1...Ra7
        • 2.Ba4#
      • 1...Rc7
        • 2.Bc4#
      • 1...Sd4
        • 2.Bc1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);OGATEB,P-FLIGHT,P_SPINR(f),P_SPINS(e),XS(G)::R(K),XR(f)
    • B(a);OGATE,SBLOCK,XS(G)::QAB(J)
    • S(e);SBLOCK::B(E)
  • Tries
    • Try
      • B(E);
      • Threat
        • R(C)+B(D)
      • Vars
        • K(b);OGATEB,P-FLIGHT,P_SPINR(f),P_SPINS(e),XS(G)::R(K),XR(f)
        • B(a);OGATE,SBLOCK,XS(G)::QAB(J)
        • R(f);::R(C)+B(D)
      • Refutation
        • S(e);
  • Actual
    • B(E);
    • Threat
      • R(C)+B(D)
    • Vars
      • K(b);OGATEB,P-FLIGHT,P_SPINR(f),P_SPINS(e),XS(G)::R(K),XR(f)
      • B(a);OGATE,SBLOCK,XS(G)::QAB(J)
      • R(f);::R(C)+B(D)
      • S(e);SBLOCK::B(E)
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