MESON Chess Problem Database

Problem Display
PID: 224273 (8/8/7p/8/1K3Nkp/R5pN/2B2R2/8 w - - 0 1)

Cotton, William C

Illustrated London News, 1887

8/8/7p/8/1K3Nkp/R5pN/2B2R2/8

#2

6 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...g2
      • 2.Rxg2#
  • Tries
    • 1.Sh5?
      • 1...Kxh3
        • 2.Bf5#
      • 1...gxf2
        • 2.Sf6#
      • 1...g2
        • 2.Sf6#
        • 2.Bd1#
      • 1...Kxh5!
    • 1.Rd2?
      • 1...g2
        • 2.Rxg2#
      • 1...h5!
    • 1.Re2?
      • 1...g2
        • 2.Rxg2#
      • 1...h5!
  • Keys
    • 1.Sd5!
      • 1...Kxh3
        • 2.Bf5#
      • 1...Kh5
        • 2.Sf6#
      • 1...gxf2
        • 2.Sf6#
      • 1...h5
        • 2.Bf5#
      • 1...g2
        • 2.Sf6#
        • 2.Bd1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(a);OGATEB::R(B),XP(a)
  • Tries
    • Try
      • S(F);
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT,XS(D)::B(A)
        • P(a);XR(B)::S(F)
      • Refutation
        • K(b);S_FLIGHT,XS(F)
    • Try
      • R(B);
      • Vars
        • P(a);OGATEB::R(B),XP(a)
      • Refutation
        • P(d);
    • Try
      • R(B);
      • Vars
        • P(a);OGATEB::R(B),XP(a)
      • Refutation
        • P(d);
  • Actual
    • S(F);
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT,XS(D)::B(A)
      • K(b);S_FLIGHT::S(F)
      • P(a);XR(B)::S(F)
      • P(d);SBLOCK::B(A)
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