MESON Chess Problem Database

Problem Display
PID: 87432 (1B6/2np1R1B/2r5/1P1kb1p1/PP4K1/3N1Pn1/2N5/Q2R4 w - - 0 1)

Bartolovic, Hrvoje

1st Prize, The Problemist, 1969

1B6/2np1R1B/2r5/1P1kb1p1/PP4K1/3N1Pn1/2N5/Q2R4

#2

12 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Qxe5#
    • 1...Rc4+
      • 2.Sf4#
    • 1...Rd6
      • 2.Qa2#
    • 1...Re6
      • 2.Sxe5#
    • 1...Se6
      • 2.Se3#
  • Tries
    • 1.Se3+?
      • 1...Kd6
        • 2.Qxe5#
      • 1...Ke6!
    • 1.Sc5+?
      • 1...Bd4
        • 2.Qxd4#
      • 1...Kc4!
    • 1.Qd4+?
      • 1...Ke6
        • 2.Qxd7#
      • 1...Bxd4!
    • 1.Qa2+?
      • 1...Rc4+
        • 2.Sf4#
      • 1...Kd6!
  • Keys
    • 1.Bg8!
      • threat
        • 2.Rxd7#
      • 1...Rc4+
        • 2.Sf4#
      • 1...Kc4
        • 2.Rf4#
      • 1...Kd6
        • 2.Qxe5#
      • 1...Ke6
        • 2.Qxe5#
      • 1...Rd6
        • 2.Qa2#
      • 1...Re6
        • 2.Sxe5#
      • 1...Bd6
        • 2.Rf5#
      • 1...Se6
        • 2.Se3#
      • 1...d6
        • 2.Rxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT,P_SPINS(f)::QAB1(A),XB(c)
    • R(e);CHECK,SBLOCK::R(B)+S(D),DCHECK
    • R(e);N_GUARD,SBLOCK::QAB(A)
    • R(e);SBLOCK::R(B)+S(D),XB(c)
    • S(f);SBLOCK::S(C)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(b);P-FLIGHT,P_SPINS(f)::QAB1(A),XB(c)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::QAR1(A),XB(c)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAB1(A),XP(g)
      • Refutation
        • B(c);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • R(e);CHECK,P_SPINR(e)::R(B)+S(D),DCHECK
      • Refutation
        • K(b);P-FLIGHT,P_SPINS(f)
  • Actual
    • B(K);
    • Threat
      • B(K)+R(J),DCHECK,XP(g)
    • Vars
      • R(e);CHECK,SBLOCK::R(B)+S(D),DCHECK
      • K(b);S_FLIGHT::B(K)+R(J),DCHECK
      • K(b);P-FLIGHT,P_SPINS(f)::QAB1(A),XB(c)
      • K(b);S_FLIGHT::QAR1(A),XB(c)
      • R(e);N_GUARD,SBLOCK::QAB(A)
      • R(e);SBLOCK::R(B)+S(D),XB(c)
      • B(c);SBLOCK::B(K)+R(J),DCHECK
      • S(f);SBLOCK::S(C)
      • P(g);OGATE,SBLOCK::B(K)+R(J),XS(f)
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