MESON Chess Problem Database

Problem Display
PID: 102824 (8/K2p4/4P3/p3R1pB/q4k2/4R1Nb/3QPb2/8 w - - 0 1)

Kovacevic, Marjan

Prize, Phenix, 2001

8/K2p4/4P3/p3R1pB/q4k2/4R1Nb/3QPb2/8

#2

8 + 7

23 Die Schwalbe 2008
145 StrateGems 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Re4#
    • 1...Qb3
      • 2.Re4#
      • 2.Qd4#
    • 1...Qb5
      • 2.Re4#
      • 2.Qd4#
    • 1...Qa1
      • 2.Re4#
    • 1...Qa2
      • 2.Re4#
      • 2.Qd4#
    • 1...Qa3
      • 2.Re4#
      • 2.Qd4#
    • 1...Qd4+
      • 2.Qxd4#
    • 1...Qe4
      • 2.Rxe4#
    • 1...Bxe3+
      • 2.Qxe3#
    • 1...Bxg3
      • 2.R3e4#
    • 1...Bf1
      • 2.Rf5#
    • 1...Bg2
      • 2.Rf5#
    • 1...Bf5
      • 2.Rxf5#
    • 1...g4
      • 2.Rf5#
  • Tries
    • 1.Rc5?
      • threat
        • 2.Rf3#
      • 1...Bxe3
        • 2.Qd6#
      • 1...Bxg3
        • 2.Ree5#
      • 1...d5!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Re4#
      • 1...Qd4+
        • 2.Qxd4#
      • 1...Bxe3+
        • 2.Rc5#
      • 1...Bxg3
        • 2.Rf3#
      • 1...Qe4
        • 2.Rxe4#
      • 1...g4
        • 2.Qf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • Q(c);N_GUARD::R1(E)
    • Q(c);CHECK,N_GUARD,N_PINR(C)::QAR2(A),XQ(c)
    • Q(c);N_GUARD::R1(E),XQ(c)
    • B(a);CHECK,OGATE,P_SPINB(a),XR(C)::QAB1(A),XB(a)
    • B(a);N_PINR(C),SBLOCK,XS(D)::QAB(A)+R(C),DCHECK
    • B(b);N_GUARD::R1(E)
    • B(b);N_GUARD::R1(E),XB(b)
    • P(f);S_CUTB(b)::R1(E)
  • Tries
    • Try
      • R(E);N_SPINR(C)
      • Threat
        • QAB(A)+R(C),DCHECK
      • Vars
        • B(a);P_PINR(E),P_SPINB(a),SBLOCK,XR(C)::QAB(A)
        • B(a);N_GUARD,SBLOCK,XS(D)::QAB(A)+R(C)
      • Refutation
        • P(g);
  • Actual
    • Q(A);
    • Threat
      • QAB(A)+R(E),DCHECK
    • Vars
      • Q(c);CHECK,N_GUARD,N_PINR(C)::QAR2(A),XQ(c)
      • B(a);CHECK,SBLOCK,XR(C)::QAB(A)+R(E)
      • B(a);N_PINR(C),XS(D)::R1(C)
      • Q(c);::QAB(A)+R(E),DCHECK,XQ(c)
      • P(f);S_CUTB(b)::QAR(A)
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