MESON Chess Problem Database

Problem Display
PID: 137557 (8/8/4B3/8/5pRP/3R1prk/3B4/7K w - - 0 1)

Watkins, ATN

The Field, 1928

(First published on Thu Oct 11 1928)

8/8/4B3/8/5pRP/3R1prk/3B4/7K

#2

6 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...f2
      • 2.Rxf4#
  • Tries
    • 1.Rxg3+?
      • 1...Kxg3
        • 2.Be1#
      • 1...Kxh4!
  • Keys
    • 1.Be1!
      • 1...Rg1+
        • 2.Rxg1#
      • 1...Rxg4
        • 2.Rxf3#
      • 1...Rg2
        • 2.Rxg2#
      • 1...f2
        • 2.Rxf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(a);P_SPINR(b)::B(F)+R(D),XP(d)
  • Tries
    • Try
      • R(D);CHECK,XR(b)
      • Vars
        • K(c);P-FLIGHT,P_SPINP(a),XR(D)::B(B)
      • Refutation
        • K(c);P-FLIGHT,XP(E)
  • Actual
    • B(B);
    • Vars
      • R(b);CHECK,OGATE,P_SPINP(a)::B(F)+R(D),XR(b)
      • R(b);OGATEB,P_SPINP(a),P_SPINR(b),XR(D)::R(C),XP(a)
      • R(b);OGATE,P_SPINP(a)::B(F)+R(D),XR(b)
      • P(a);P_SPINR(b)::B(F)+R(D),XP(d)
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