MESON Chess Problem Database

Problem Display
PID: 195739 (B2K4/PR1Q4/r1P1p3/p3P3/N3k1P1/6B1/n2P2Pp/3b1RbN w - - 0 1)

Phillips, W

Western Daily Mercury, 1917

(First published on Sat Oct 13 1917)

B2K4/PR1Q4/r1P1p3/p3P3/N3k1P1/6B1/n2P2Pp/3b1RbN

#2

14 + 8

15239 Valois Notebooks 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bf3
      • 2.gxf3#
    • 1...Bf2
      • 2.Sxf2#
    • 1...Be3
      • 2.d3#
    • 1...Bc5
      • 2.Sxc5#
    • 1...Sc1
      • 2.Sc3#
    • 1...Sc3
      • 2.Sxc3#
    • 1...Sb4
      • 2.Sc3#
  • Tries
    • 1.Re1+?
      • 1...Be3
        • 2.Sf2#
        • 2.Sc5#
        • 2.Rxe3#
        • 2.d3#
      • 1...Be2!
    • 1.Rb4+?
      • 1...Bd4
        • 2.Sf2#
        • 2.Sc5#
        • 2.Rxd4#
        • 2.Qxd4#
      • 1...Sxb4
        • 2.Sc3#
      • 1...axb4!
  • Keys
    • 1.Rb5!
      • threat
        • 2.Rf4#
      • 1...Bb6+
        • 2.c7#
      • 1...Bd4
        • 2.Qh7#
      • 1...Bf3
        • 2.gxf3#
      • 1...Bf2
        • 2.Sxf2#
      • 1...Be3
        • 2.d3#
      • 1...Bc5
        • 2.Sxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • B(a);OGATE::P(D),XB(a)
    • B(b);N_GUARD::S(B),XB(b)
    • B(b);SBLOCK::P(C)
    • B(b);N_GUARD::S(F),XB(b)
    • S(c);N_GUARD::S(F)
    • S(c);N_GUARD::S(F),XS(c)
  • Tries
    • Try
      • R(A);CHECK
      • Refutation
        • B(a);P_SPINB(a)
    • Try
      • R(K);CHECK
      • Vars
        • S(c);XR(K)::S(F)
      • Refutation
        • P(f);XR(K)
  • Actual
    • R(K);
    • Threat
      • R1(A)
    • Vars
      • B(b);CHECK,S_CUTR(g)::B(M)+P(I)
      • B(b);SBLOCK::QAB(L)
      • B(a);OGATE::P(D),XB(a)
      • B(b);N_GUARD::S(B),XB(b)
      • B(b);SBLOCK::P(C)
      • B(b);N_GUARD::S(F),XB(b)
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