MESON Chess Problem Database

Problem Display
PID: 150136 (2Q5/5b2/2N1q2B/r3p3/6k1/5R2/n2p2N1/1KbB4 w - - 0 1)

Moon, James Frank

Hampstead and Highgate Express, 1895

(First published on Fri Aug 30 1895)

2Q5/5b2/2N1q2B/r3p3/6k1/5R2/n2p2N1/1KbB4

#2

7 + 8

14867 BCPS Library 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Qf5+
      • 2.Rd3#
      • 2.Qxf5#
    • 1...Bh5
      • 2.Qxe6#
  • Tries
    • 1.Sxe5+?
      • 1...Kh5
        • 2.Rh3#
      • 1...Rxe5!
    • 1.Qxe6+?
      • 1...Kh5
        • 2.Rf1#
        • 2.Rf2#
        • 2.Ra3#
        • 2.Rb3#
        • 2.Rc3#
        • 2.Rd3#
        • 2.Re3#
        • 2.Rg3#
        • 2.Rh3#
        • 2.Rf4#
        • 2.Rf5#
        • 2.Rf6#
        • 2.Rxf7#
      • 1...Bxe6!
  • Keys
    • 1.Se7!
      • threat
        • 2.Ra3#
        • 2.Rb3#
        • 2.Rc3#
        • 2.Rd3#
        • 2.Re3#
      • 1...Qf5+
        • 2.Rd3#
        • 2.Qxf5#
      • 1...Rb5+
        • 2.Rb3#
      • 1...Bg6+
        • 2.Rd3#
      • 1...Sc3+
        • 2.Rxc3#
      • 1...Kh5
        • 2.Rh3#
      • 1...Ra3
        • 2.Rxa3#
        • 2.Rb3#
        • 2.Rc3#
        • 2.Rd3#
        • 2.Re3#
      • 1...Ba3
        • 2.Rxa3#
        • 2.Rb3#
        • 2.Rc3#
        • 2.Rd3#
        • 2.Re3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • B(h);N_GUARD,SBLOCK::QAB(G),XQ(g)
  • Tries
    • Try
      • S(E);CHECK,XP(f)
      • Vars
        • K(d);N_SPINQ(g),S_FLIGHT::B(B)+R(D),DCHECK
      • Refutation
        • R(e);XS(E)
    • Try
      • Q(G);CHECK,XQ(g)
      • Refutation
        • B(h);XQ(G)
  • Actual
    • S(E);
    • Threat
      • DUALS(5)
    • Vars
      • R(e);CHECK::B(B)+R(D)
      • B(h);CHECK::B(B)+R(D)
      • S(b);CHECK::B(B)+R(D),XS(b)
      • K(d);N_SPINQ(g),S_FLIGHT::B(B)+R(D),DCHECK
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