MESON Chess Problem Database

Problem Display
PID: 84672 (8/3Rp2b/1BBp2pq/4P3/pk3NR1/p1ppK3/P1PN4/1r6 w - - 0 1)

Fillery, William Edmund Frank

American Chess Problemist, 1952

8/3Rp2b/1BBp2pq/4P3/pk3NR1/p1ppK3/P1PN4/1r6

#2

10 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf4+
      • 2.Rxf4#
    • 1...Qg7
      • 2.Se2#
      • 2.Sg2#
      • 2.Sxd3#
      • 2.Sh3#
      • 2.Sd5#
      • 2.Sh5#
      • 2.Se6#
      • 2.Sxg6#
    • 1...Qf8
      • 2.Sxd3#
      • 2.Sd5#
    • 1...Qh1
      • 2.Sg2#
      • 2.Sxd3#
      • 2.Sd5#
    • 1...Qh2
      • 2.Sxd3#
      • 2.Sd5#
    • 1...Qh3+
      • 2.Sxh3#
    • 1...Qh4
      • 2.Sxd3#
      • 2.Sd5#
    • 1...Qh5
      • 2.Sxd3#
      • 2.Sd5#
      • 2.Sxh5#
    • 1...g5
      • 2.Sxd3#
      • 2.Sd5#
      • 2.Sg6#
  • Keys
    • 1.Kxd3!
      • threat
        • 2.Sd5#
      • 1...Qh3+
        • 2.Sxh3#
      • 1...g5+
        • 2.Sg6#
      • 1...Qxf4
        • 2.Rxf4#
      • 1...d5
        • 2.Sxd5#

There are these versions: 84651

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(i);CHECK,OGATE,P_SPINQ(i),XS(E)::R(F),XQ(i)
    • Q(i);CHECK,N_PINS(E)::R(F)+S(E),XQ(i)
  • Actual
    • K(D);N_SPINS(E),P-FLIGHT,XP(d)
    • Threat
      • R(F)+S(E),DCHECK
    • Vars
      • Q(i);CHECK,N_GUARD::R(F)+S(E),XQ(i)
      • P(h);CHECK,S_CUTQ(i)::R(F)+S(E)
      • Q(i);OGATE,P_SPINQ(i),XS(E)::R(F),XQ(i)
      • P(g);::R(F)+S(E),DCHECK,XP(g)
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