MESON Chess Problem Database

Problem Display
PID: 274552 (bQK3B1/2P1p3/2kq2R1/rpPp4/n2p4/3N4/8/8 w - - 0 1)

Eddy, Edwin John

Western Morning News, 1925

(First published on Sat Feb 21 1925)

bQK3B1/2P1p3/2kq2R1/rpPp4/n2p4/3N4/8/8

#2

7 + 9

15239 Valois Notebooks 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Qe6+
      • 2.Rxe6#
    • 1...Bb7+
      • 2.Qxb7#
    • 1...Sb2
      • 2.Qb6#
    • 1...Sc3
      • 2.Qb6#
    • 1...Sxc5
      • 2.Sb4#
      • 2.Se5#
    • 1...Sb6+
      • 2.Qxb6#
    • 1...e5
      • 2.Rxd6#
  • Keys
    • 1.Be6!
      • threat
        • 2.Bd7#
      • 1...Qxc7+
        • 2.Qxc7#
      • 1...Qxe6+
        • 2.Rxe6#
      • 1...Qd7+
        • 2.Bxd7#
      • 1...Qd8+
        • 2.cxd8S#
      • 1...Bb7+
        • 2.Qxb7#
      • 1...Sb6+
        • 2.Qxb6#
      • 1...Sxc5
        • 2.Sb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • Q(g);CHECK,OGATEB::R(C),XQ(g)
    • B(i);CHECK,N_GUARD::QAB1(E),XB(i)
    • S(a);N_GUARD::QAR1(E)
    • S(a);CHECK,N_GUARD::QAR1(E),XS(a)
    • P(h);N_GUARD::R1(C),XQ(g)
  • Actual
    • B(G);N_PINQ(g)
    • Threat
      • B(G)
    • Vars
      • Q(g);CHECK,OGATE,XP(D)::QAR1(E),XQ(g)
      • Q(g);CHECK,OGATE,P_SPINQ(g),XB(G)::R(C),XQ(g)
      • Q(g);CHECK::R(C)+B(G),DCHECK,XQ(g)
      • Q(g);CHECK,OGATE::PXQ(g)=S
      • B(i);CHECK,N_GUARD::QAB1(E),XB(i)
      • S(a);CHECK,N_GUARD::QAR1(E),XS(a)
      • S(a);SBLOCK,XP(B)::S(A)
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