MESON Chess Problem Database

Problem Display
PID: 2849 (8/8/4pR2/4N2p/6pk/6R1/4K2P/7Q w - - 0 1)

Loyd, Sam

Buffalo Commercial Advertiser, 1890

8/8/4pR2/4N2p/6pk/6R1/4K2P/7Q

#2

6 + 4

5206 Sam Loyd and His Chess Problems 1913
5658 Beispiele zur Ideengeschichte des Schachproblems (Josef Breuer) 1982
133 The Problemist Supplement 2012

SOLUTION

  • SOUND
  • Tries
    • 1.Sd7?
      • 1...Kg5
        • 2.h4#
      • 1...e5!
    • 1.Rxg4+?
      • 1...Kh3
        • 2.Rf3#
        • 2.Qg2#
      • 1...hxg4!
    • 1.Rff3?
      • 1...gxf3+
        • 2.Sxf3#
      • 1...Kg5!
    • 1.Qf3?
      • 1...gxf3+
        • 2.Sxf3#
      • 1...Kg5!
  • Keys
    • 1.Qa1!
      • 1...Kg5
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Vars
        • K(b);OGATE,P_SPINP(a),S_FLIGHT::P(C)
      • Refutation
        • P(d);
    • Try
      • R(D);CHECK,XP(a)
      • Refutation
        • P(c);XR(D)
    • Try
      • R(F);
      • Vars
        • P(a);CHECK,XR(F)::S(E),XP(a)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • P(a);CHECK,XQ(A)::S(E),XP(a)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT::S(E)
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