MESON Chess Problem Database

Problem Display
PID: 152590 (8/8/2R5/3b4/4N1K1/BB1p4/R1P1k1N1/6r1 w - - 0 1)

Dawson, Thomas Rayner

British Chess Magazine, 1940

8/8/2R5/3b4/4N1K1/BB1p4/R1P1k1N1/6r1

#2

8 + 4

15256 TRD Scrapbook 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Kd1
      • 2.c4#
  • Tries
    • 1.cxd3+?
      • 1...Kf1
        • 2.Sg3#
        • 2.Rf2#
        • 2.Rc1#
        • 2.Rf6#
      • 1...Kxd3!
    • 1.c3+?
      • 1...Kf1
        • 2.Sg3#
        • 2.Rf2#
        • 2.Rf6#
      • 1...d2!
    • 1.c4+?
      • 1...Kf1
        • 2.Sg3#
        • 2.Rf2#
        • 2.Rf6#
      • 1...d2!
  • Keys
    • 1.Sg3+!
      • 1...Kd1
        • 2.c4#
      • 1...Kd2
        • 2.c3#
      • 1...Kf2
        • 2.cxd3#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::B(E)+P(B)
  • Tries
    • Try
      • P(B);CHECK,XP(c)
      • Refutation
        • K(b);S_FLIGHT,XP(B)
    • Try
      • P(B);CHECK
      • Refutation
        • P(c);P_SPINP(c)
    • Try
      • P(B);CHECK
      • Refutation
        • P(c);P_SPINP(c)
  • Actual
    • S(F);CHECK,N_SPINS(C)
    • Vars
      • K(b);S_FLIGHT::B(E)+P(B)
      • K(b);P-FLIGHT::R(A)+P(B)
      • K(b);P-FLIGHT::R(A)+P(B),XP(c)
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