MESON Chess Problem Database

Problem Display
PID: 101243 (R3n1rb/BkNn4/2R5/3Bp3/8/Kp6/8/Q6b w - - 0 1)

Sparke, Arthur M

Good Companions, 1920

R3n1rb/BkNn4/2R5/3Bp3/8/Kp6/8/Q6b

#2

7 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rg2
      • 2.Rc1#
      • 2.Rc2#
      • 2.Rc3#
      • 2.Rc4#
      • 2.Rc5#
    • 1...Sxc7
      • 2.Rb6#
    • 1...e4
      • 2.Rc1#
      • 2.Rc2#
      • 2.Rc3#
      • 2.Rc4#
      • 2.Rc5#
  • Tries
    • 1.Kb4?
      • threat
        • 2.Qa6#
      • 1...Sxc7
        • 2.Rb6#
      • 1...Sb8
        • 2.Rxb8#
      • 1...Sc5
        • 2.Rb8#
      • 1...Rg4+!
    • 1.Sb5?
      • threat
        • 2.Rb6#
      • 1...Kxa8
        • 2.Rc8#
      • 1...Sb6
        • 2.Rxb6#
      • 1...Sb8
        • 2.Rxb8#
      • 1...Bxd5!
    • 1.Qf1?
      • threat
        • 2.Qa6#
      • 1...Sxc7
        • 2.Rb6#
      • 1...Sc5
        • 2.Qb5#
      • 1...Sb8!
  • Keys
    • 1.Kb2!
      • threat
        • 2.Qa6#
      • 1...Rg2+
        • 2.Rc2#
      • 1...e4+
        • 2.Rc3#
      • 1...Sxc7
        • 2.Rb6#
      • 1...Sb8
        • 2.Rxb8#
      • 1...Sc5
        • 2.Rb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(f);SBLOCK,XS(F)::B(C)+R(D),DCHECK
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Threat
        • QAB1(A)
      • Vars
        • S(f);SBLOCK,XS(F)::B(C)+R(D),DCHECK
        • S(e);N_GUARD::R1(G),XS(e)
        • S(e);N_GUARD::R1(G)
      • Refutation
        • R(g);CHECK
    • Try
      • S(F);
      • Threat
        • B(C)+R(D),DCHECK
      • Vars
        • K(d);S_FLIGHT,XR(G)::B(C)+R(D),DCHECK
        • S(e);::B(C)+R(D),DCHECK,XS(e)
        • S(e);N_GUARD::R1(G),XS(e)
      • Refutation
        • B(a);XB(C)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • S(f);SBLOCK,XS(F)::B(C)+R(D),DCHECK
        • S(e);N_GUARD::QAR2(A)
      • Refutation
        • S(e);
  • Actual
    • K(B);S_FLIGHT
    • Threat
      • QAB1(A)
    • Vars
      • R(g);CHECK,S_CUTB(a)::B(C)+R(D)
      • P(c);CHECK,S_CUTB(a)::B(C)+R(D)
      • S(f);SBLOCK,XS(F)::B(C)+R(D),DCHECK
      • S(e);N_GUARD::R1(G),XS(e)
      • S(e);N_GUARD::R1(G)
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