MESON Chess Problem Database

Problem Display
PID: 73393 (r3k1N1/R2N1pP1/8/q1P2pr1/Bp5B/1P4p1/8/R3K3 w Qq - 0 1)

Predrag, Nikola

1st Comm., Problem Online, 2004-2005

r3k1N1/R2N1pP1/8/q1P2pr1/Bp5B/1P4p1/8/R3K3

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qd8
      • 2.Sdf6#
    • 1...Rd8
      • 2.Sdf6#
    • 1...0-0-0
      • 2.Se7#
  • Tries
    • 1.Sb6+?
      • 1...Kd8
        • 2.Rd1#
        • 2.0-0-0#
      • 1...Qb5
        • 2.Rxa8#
      • 1...Qxa4!
    • 1.Rd1?
      • threat
        • 2.Sdf6#
      • 1...Kd8
        • 2.Sb6#
      • 1...0-0-0
        • 2.Se7#
      • 1...f6
        • 2.Sdxf6#
      • 1...Rxg7!
    • 1.Rxa8+?
      • 1...Qd8
        • 2.Se5#
        • 2.Sb6#
        • 2.Sdf6#
        • 2.Sf8#
      • 1...Qxa8!
  • Keys
    • 1.0-0-0!
      • threat
        • 2.Sdf6#
      • 1...Qxc5+
        • 2.Sxc5#
      • 1...Kd8
        • 2.Sb6#
      • 1...0-0-0
        • 2.Se7#
      • 1...Rxg7
        • 2.Re1#
      • 1...f6
        • 2.Sdxf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • Q(c);SBLOCK::B(D)+S(H),DCHECK
    • R(g);SBLOCK::B(D)+S(H),DCHECK
    • K(h);0-0-0::S(J)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • Q(c);P_SPINQ(c)::R(G),XR(g)
      • Refutation
        • Q(c);XB(D)
    • Try
      • R(A);
      • Threat
        • B(D)+S(H),DCHECK
      • Vars
        • K(h);P-FLIGHT,P_SPINR(e)::R(A)+S(H)
        • K(h);0-0-0::S(J)
        • P(f);::B(D)+S(H),DCHECK,XP(f)
      • Refutation
        • R(e);XP(I)
    • Try
      • R(G);CHECK,XR(g)
      • Refutation
        • Q(c);XR(G)
  • Actual
    • K(B);0-0-0
    • Threat
      • B(D)+S(H),DCHECK
    • Vars
      • Q(c);CHECK,XP(F)::B(D)+S(H),XQ(c)
      • K(h);P-FLIGHT,P_SPINR(e)::R(A)+S(H)
      • K(h);0-0-0::S(J)
      • R(e);XP(I)::R(A)
      • P(f);::B(D)+S(H),DCHECK,XP(f)
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