MESON Chess Problem Database

Problem Display
PID: 72144 (8/7B/8/1Q6/1N6/2p5/p1b5/Bk2K3 w - - 0 1)

Subotic, Miroslav

Probleemblad, 2007

8/7B/8/1Q6/1N6/2p5/p1b5/Bk2K3

#2

5 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kxa1
      • 2.Sxc2#
    • 1...Kc1
      • 2.Sxa2#
  • Tries
    • 1.Bxc2+?
      • 1...Kc1
        • 2.Qg5#
      • 1...Kxa1!
    • 1.Bd3?
      • 1...Kxa1
        • 2.Sxc2#
      • 1...Kc1
        • 2.Sxa2#
      • 1...Bxd3!
    • 1.Qe2?
      • threat
        • 2.Qd1#
      • 1...Kc1
        • 2.Qxc2#
      • 1...Kxa1!
  • Keys
    • 1.Qa4!
      • 1...Kxa1
        • 2.Qxa2#
      • 1...Kc1
        • 2.Qxc2#
      • 1...Bxh7
        • 2.Qd1#
      • 1...Bd3
        • 2.Qd1#
      • 1...Be4
        • 2.Qd1#
      • 1...Bf5
        • 2.Qd1#
      • 1...Bg6
        • 2.Qd1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(a);N_SPINB(c),P-FLIGHT,XB(A)::S(C),XB(c)
    • K(a);N_SPINB(c),P-FLIGHT::S(C),XP(b)
  • Tries
    • Try
      • B(E);CHECK,XB(c)
      • Vars
        • K(a);P-FLIGHT::QAB(D)
      • Refutation
        • K(a);P-FLIGHT,XB(A)
    • Try
      • B(E);
      • Vars
        • K(a);N_SPINB(c),P-FLIGHT,XB(A)::S(C),XB(c)
        • K(a);N_SPINB(c),P-FLIGHT::S(C),XP(b)
      • Refutation
        • B(c);N_SPINB(c),XB(E)
    • Try
      • Q(D);
      • Threat
        • QAR2(D)
      • Vars
        • K(a);N_SPINB(c),P-FLIGHT::QAR1(D),XB(c)
      • Refutation
        • K(a);N_SPINB(c),P-FLIGHT,XB(A)
  • Actual
    • Q(D);
    • Vars
      • K(a);N_SPINB(c),P-FLIGHT,P_SPINP(b),XB(A)::QAR1(D),XP(b)
      • K(a);N_SPINB(c),P-FLIGHT::QAR1(D),XB(c)
      • B(c);N_SPINB(c),OGATE,XB(E)::QAR2(D)
      • B(c);OGATE::QAR2(D)
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