MESON Chess Problem Database

Problem Display
PID: 151902 (8/4P2B/bKPrQ2B/p1P1p1N1/1N1k4/1pp2Rb1/q1r4n/8 w - - 0 1)

Williams, Philip Hamilton

Hampstead and Highgate Express, 1897

(First published on Sat Sep 11 1897)

8/4P2B/bKPrQ2B/p1P1p1N1/1N1k4/1pp2Rb1/q1r4n/8

#2

10 + 11

14867 BCPS Library 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Qxd5#
    • 1...Rxc6+
      • 2.Sxc6#
    • 1...Rd8
      • 2.exd8Q#
      • 2.exd8R#
    • 1...Bd3
      • 2.Rxd3#
    • 1...Bb7
      • 2.Rd3#
    • 1...Bc8
      • 2.Rd3#
    • 1...Sxf3
      • 2.Sxf3#
    • 1...b2
      • 2.Sxc2#
    • 1...e4
      • 2.Qxe4#
  • Keys
    • 1.Bd3!
      • threat
        • 2.Qxd6#
      • 1...Rxc6+
        • 2.Sxc6#
      • 1...Rxe6
        • 2.Sxe6#
      • 1...Bxd3
        • 2.Rxd3#
      • 1...Sxf3
        • 2.Sxf3#
      • 1...Rd5
        • 2.Qxd5#
      • 1...Rd7
        • 2.Qxd7#
      • 1...Rd8
        • 2.exd8Q#
        • 2.exd8R#
      • 1...Bc4
        • 2.Qxc4#
      • 1...b2
        • 2.Sxc2#
      • 1...e4
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(k);N_GUARD,N_PINP(F)::QAR1(G),XR(k)
    • R(k);CHECK,XP(F)::S(B),XR(k)
    • R(k);N_PINP(F),OGATE::PXR(k)=Q
    • B(j);N_GUARD::R1(A),XB(j)
    • B(j);N_GUARD::R1(A)
    • S(c);XR(A)::S(D),XS(c)
    • P(d);N_GUARD,S_CUTQ(a)::S(B),XR(b)
    • P(i);OGATE::QAR1(G),XP(i)
  • Actual
    • B(J);
    • Threat
      • QAR2(G),XR(k)
    • Vars
      • R(k);CHECK,XP(F)::S(B),XR(k)
      • R(k);XQ(G)::S(D),XR(k)
      • B(j);OGATE,XB(J)::R1(A),XB(j)
      • S(c);XR(A)::S(D),XS(c)
      • R(k);N_GUARD,N_PINP(F)::QAR1(G),XR(k)
      • R(k);N_PINP(F),OGATEB::QAR(G),XR(k)
      • R(k);N_PINP(F),OGATE::PXR(k)=Q
      • B(j);N_GUARD::QAR1(G),XB(j)
      • P(d);N_GUARD,S_CUTQ(a)::S(B),XR(b)
      • P(i);OGATE::QAR1(G),XP(i)
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