MESON Chess Problem Database

Problem Display
PID: 142834 (8/PK3pr1/PN1PpB2/k1N1R1q1/6rb/8/1R6/8 w - - 0 1)

Francey, James

Il Problema, 1932

8/PK3pr1/PN1PpB2/k1N1R1q1/6rb/8/1R6/8

#2

9 + 7

14867 BCPS Library 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Qd2
      • 2.Sd3#
    • 1...Qh6
      • 2.Sd3#
      • 2.Sca4#
      • 2.Se4#
      • 2.Sxe6#
      • 2.Scd7#
    • 1...Qg6
      • 2.Sd3#
      • 2.Sca4#
      • 2.Se4#
      • 2.Sxe6#
      • 2.Scd7#
    • 1...Rg1
      • 2.Sc4#
    • 1...Rg2
      • 2.Sc4#
    • 1...Rg3
      • 2.Sc4#
    • 1...Rb4
      • 2.Sb3#
    • 1...Rc4
      • 2.Sxc4#
  • Keys
    • 1.Bd8!
      • threat
        • 2.Sc4#
      • 1...Qe7+
        • 2.Scd7#
      • 1...f5+
        • 2.Scd7#
      • 1...f6+
        • 2.Sbd7#
      • 1...Qxd8
        • 2.Sd3#
        • 2.Sca4#
        • 2.Se4#
        • 2.Sxe6#
        • 2.Scd7#
      • 1...Rb4
        • 2.Sb3#
      • 1...Rc4
        • 2.Sxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • Q(d);N_GUARD::R(C)+S(B)
    • R(a);N_GUARD::S(E)
    • R(a);P_PINS(E),SBLOCK::R(C)+S(B),DCHECK
    • R(a);N_GUARD::S(E),XR(a)
  • Actual
    • B(G);
    • Threat
      • B(G)+S(E),DCHECK
    • Vars
      • Q(d);CHECK,N_GUARD::R(C)+S(B)
      • P(f);CHECK,S_CUTQ(d)::R(C)+S(B)
      • P(f);CHECK,S_CUTQ(d)::B(G)+S(E)
      • R(a);P_PINS(E),SBLOCK::R(C)+S(B),DCHECK
      • R(a);::B(G)+S(E),DCHECK,XR(a)
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