MESON Chess Problem Database

Problem Display
PID: 250392 (2b1q3/1nBkP3/1P2Rp1R/1p3r2/1K2P1B1/8/8/8 w - - 0 1)

Hume, George

English Mechanic and World of Science, 1884

(First published on Fri Sep 12 1884)

2b1q3/1nBkP3/1P2Rp1R/1p3r2/1K2P1B1/8/8/8

#2

8 + 7

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qf8
      • 2.exf8S#
  • Keys
    • 1.Rh7!
      • 1...Qxe7+
        • 2.Rhxe7#
      • 1...Kxe6
        • 2.Bxf5#
      • 1...Qh5
        • 2.e8Q#
      • 1...Qg6
        • 2.e8Q#
      • 1...Qf7
        • 2.e8Q#
      • 1...Qd8
        • 2.exd8S#
        • 2.e8Q#
      • 1...Qf8
        • 2.exf8S#
      • 1...Qg8
        • 2.e8Q#
      • 1...Qh8
        • 2.e8Q#
      • 1...Sd6
        • 2.Rxd6#
      • 1...Rf1
        • 2.Rd6#
      • 1...Rf2
        • 2.Rd6#
      • 1...Rf3
        • 2.Rd6#
      • 1...Rf4
        • 2.Rd6#
      • 1...Rc5
        • 2.Rd6#
      • 1...Rd5
        • 2.Rd6#
      • 1...Re5
        • 2.Rd6#
      • 1...Rg5
        • 2.Rd6#
      • 1...Rh5
        • 2.Rd6#
      • 1...Sa5
        • 2.Rd6#
      • 1...Sc5
        • 2.Rd6#
      • 1...Sd8
        • 2.Rd6#

This is a version

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 20
    • REMOVED MATES = 0
  • Sets
    • Q(g);OGATE,P_PINP(H)::PXQ(g)=S
  • Actual
    • R(F);
    • Vars
      • Q(g);CHECK,OGATE,P_SPINQ(g),XP(H)::R1(F),XQ(g)
      • K(e);OGATEB,P_SPINR(b),S_FLIGHT,XR(E)::B(C),XR(b)
      • Q(g);OGATE::P=Q
      • Q(g);OGATE,P_PINP(H)::PXQ(g)=S
      • S(d);N_GUARD::R1(E),XS(d)
      • R(b);::B(C)+R(E),DCHECK
      • R(b);P_PINP(B)::B(C)+R(E),DCHECK
      • S(d);N_GUARD::R1(E)
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