MESON Chess Problem Database

Problem Display
PID: 52442 (q2Nn2K/1P6/1BBkP3/8/2Rp1P1Q/3p1N2/8/b1n5 w - - 0 1)

Howard, Kenneth Samuel

Western Morning News and Daily Gazette, 1934

(First published on Sat Jul 14 1934)

q2Nn2K/1P6/1BBkP3/8/2Rp1P1Q/3p1N2/8/b1n5

#2

10 + 7

5089 The Enjoyment of Chess Problems 1943
14868 Pirnie Collection 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Qc8
      • 2.bxc8S#
    • 1...Sc7
      • 2.Bc5#
  • Tries
    • 1.b8Q+?
      • 1...Sc7
        • 2.Bc5#
        • 2.Bxc7#
        • 2.Qxc7#
      • 1...Qxb8!
    • 1.b8B+?
      • 1...Sc7
        • 2.Bc5#
        • 2.B6xc7#
        • 2.B8xc7#
      • 1...Qxb8!
  • Keys
    • 1.Sxd4!
      • threat
        • 2.Sf7#
      • 1...Bxd4+
        • 2.Rxd4#
      • 1...Qxb7
        • 2.Sxb7#
      • 1...Qxd8
        • 2.Qxd8#
      • 1...Sf6
        • 2.Sf5#
      • 1...Sc7
        • 2.Bc5#
      • 1...Sg7
        • 2.Sb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • Q(f);OGATE::PXQ(f)=S
    • S(g);P_PINS(I),SBLOCK::B(E)
  • Tries
    • Try
      • P(H);CHECK
      • Refutation
        • Q(f);XQ(H)
    • Try
      • P(H);CHECK
      • Refutation
        • Q(f);XB(H)
  • Actual
    • S(A);P_SPINS(A),XP(d)
    • Threat
      • S(I)
    • Vars
      • B(a);CHECK,OGATE,XS(A)::R(B),XB(a)
      • Q(f);XP(H)::S(I),XQ(f)
      • Q(f);OGATE,XS(I)::QAR2(D),XQ(f)
      • S(g);N_PINS(A),P_PINS(I)::S(A)
      • S(g);SBLOCK::B(E)
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