MESON Chess Problem Database

Problem Display
PID: 142216 (3K2b1/8/N2p3Q/1P1k4/3r4/3N1P2/2P5/B4B2 w - - 0 1)

Lane, Henry Fitzgerald William

Illustrated London News, 1910

(First published on Sat Oct 1 1910)

3K2b1/8/N2p3Q/1P1k4/3r4/3N1P2/2P5/B4B2

#2

9 + 4

14867 BCPS Library 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Rb4
      • 2.Sdxb4#
    • 1...Rf4
      • 2.Sxf4#
  • Tries
    • 1.Sf4+?
      • 1...Ke5
        • 2.Qg5#
      • 1...Rxf4!
    • 1.Qxd6+?
      • 1...Kc4
        • 2.Se5#
      • 1...Kxd6!
  • Keys
    • 1.Qf4!
      • 1...Kc4
        • 2.Sdb4#
      • 1...Ke6
        • 2.Sc7#
      • 1...Rxd3
        • 2.Qe4#
      • 1...Rxf4
        • 2.Sxf4#
      • 1...Ra4
        • 2.Sc7#
      • 1...Rb4
        • 2.Sc7#
      • 1...Rc4
        • 2.Qf5#
      • 1...Re4
        • 2.Qxe4#
      • 1...Be6
        • 2.Qxd4#
      • 1...Bf7
        • 2.Qxf7#
      • 1...Bh7
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • R(a);N_GUARD::S(D),XR(a)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(b);P-FLIGHT,P_SPINR(a)::QAR2(H)
      • Refutation
        • R(a);XS(D)
    • Try
      • Q(H);CHECK,XP(c)
      • Vars
        • K(b);P_PINQ(H),S_FLIGHT::B(B)+S(D),DCHECK
      • Refutation
        • K(b);P-FLIGHT,XQ(H)
  • Actual
    • Q(H);
    • Vars
      • K(b);P_SPINR(a),S_FLIGHT::B(B)+S(D)
      • K(b);S_FLIGHT::S(G)
      • R(a);N_GUARD,XS(D)::QAB1(H)
      • R(a);XQ(H)::S(D),XR(a)
      • R(a);::S(G)
      • R(a);SBLOCK::QAR2(H)
      • R(a);N_GUARD::QAB1(H),XR(a)
      • B(d);SBLOCK::QAR1(H),XR(a)
      • B(d);N_GUARD::QAB(H),XB(d)
      • B(d);N_GUARD::QAB(H)
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