MESON Chess Problem Database

Problem Display
PID: 168909 (1r1Rb1rB/2p1pn1B/1p2k3/2PRN3/3QP1N1/2K1n1b1/5p2/8 w - - 0 1)

Beach, GD

Detroit Free Press, 1884

(First published on Sat Mar 22 1884)

1r1Rb1rB/2p1pn1B/1p2k3/2PRN3/3QP1N1/2K1n1b1/5p2/8

#2

10 + 11

14868 Pirnie Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sf1
      • 2.Bf5#
    • 1...Sc2
      • 2.Bf5#
    • 1...Sg2
      • 2.Bf5#
    • 1...Sc4
      • 2.Bf5#
    • 1...Sxg4
      • 2.Bf5#
    • 1...Sxd5+
      • 2.Qxd5#
      • 2.exd5#
    • 1...Sf5
      • 2.Bxf5#
      • 2.exf5#
  • Keys
    • 1.Qc4!
      • threat
        • 2.R5d6#
      • 1...Bxe5+
        • 2.Rxe5#
      • 1...Sd1+
        • 2.Rxd1#
      • 1...Sxd5+
        • 2.Qxd5#
        • 2.exd5#
      • 1...Sxc4
        • 2.Bf5#
      • 1...Sd6
        • 2.R5xd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • S(b);N_GUARD::B(H)
    • S(b);N_GUARD,XS(D)::B(H)
  • Actual
    • Q(B);
    • Threat
      • QAB(B)+R(F),DCHECK
    • Vars
      • B(c);CHECK,OGATE,XS(G)::QAB(B)+R(F),DCHECK,XB(c)
      • S(b);CHECK,N_GUARD::QAB(B)+R(F),XS(b)
      • S(b);N_GUARD,XQ(B)::B(H)
      • S(h);::QAB(B)+R(F),DCHECK,XS(h)
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