MESON Chess Problem Database

Problem Display
PID: 52437 (8/8/8/1b2N1K1/4P2p/1R4bk/R6p/2Qr4 w - - 0 1)

Howard, Kenneth Samuel

4th HM., Falkirk Herald, 1927

8/8/8/1b2N1K1/4P2p/1R4bk/R6p/2Qr4

#2

6 + 6

5089 The Enjoyment of Chess Problems 1943

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Qf1#
    • 1...Bd3
      • 2.Qc8#
  • Tries
    • 1.Rxg3+?
      • 1...Kxg3
        • 2.Qe3#
      • 1...hxg3!
    • 1.Qxd1?
      • threat
        • 2.Qg4#
      • 1...Bd7
        • 2.Qf1#
        • 2.Qxd7#
      • 1...Be2!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Sf4#
      • 1...Bf4+
        • 2.Sxf4#
      • 1...Rxd3
        • 2.Qf1#
      • 1...Bxd3
        • 2.Qc8#
      • 1...Rf1
        • 2.Qxf1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(a);N_SPINB(c),OGATE::QAB(A)
    • B(f);N_GUARD,N_SPINB(c),S_CUTR(a)::QAB(A)
  • Tries
    • Try
      • R(C);CHECK,XB(c)
      • Vars
        • K(d);P-FLIGHT,XR(C)::QAR2(A)
      • Refutation
        • P(e);XR(C)
    • Try
      • Q(A);XR(a)
      • Threat
        • QAB1(A)
      • Refutation
        • B(f);
  • Actual
    • S(E);N_PINB(c)
    • Threat
      • S(E)
    • Vars
      • B(c);CHECK::R(C)+S(E),DCHECK,XB(c)
      • R(a);OGATE,XS(E)::QAB(A)
      • B(f);N_GUARD,XS(E)::QAB(A)
      • R(a);OGATE::QAB(A),XR(a)
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