MESON Chess Problem Database

Problem Display
PID: 84651 (8/3rp2b/1BBp2pq/4P3/pk3NR1/prppK3/P1PN4/1R6 w - - 0 1)

Fillery, William Edmund Frank

Hassberg, Eric Manfred

American Chess Problemist, 1952

8/3rp2b/1BBp2pq/4P3/pk3NR1/prppK3/P1PN4/1R6

#2

10 + 12

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#
  • Tries
    • 1.Kf3?
      • threat
        • 2.Sxd3#
        • 2.Sd5#
      • 1...Qxf4+
        • 2.Rxf4#
      • 1...Qh1+
        • 2.Sg2#
      • 1...Qh3+
        • 2.Sxh3#
      • 1...cxd2
        • 2.Sd5#
      • 1...dxc2
        • 2.Sd3#
        • 2.Sd5#
      • 1...d5
        • 2.Sxd3#
        • 2.Sxd5#
      • 1...Qf8!
  • Keys
    • 1.Kxd3!
      • threat
        • 2.Sd5#
      • 1...Qh3+
        • 2.Sxh3#
      • 1...cxd2+
        • 2.c3#
      • 1...g5+
        • 2.Sg6#
      • 1...Qxf4
        • 2.Rxf4#
      • 1...d5
        • 2.Sxd5#

This is a version of 84672

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(i);CHECK,OGATE,P_SPINQ(i),XS(F)::R(G),XQ(i)
    • Q(i);CHECK,N_PINS(F)::R(G)+S(F),XQ(i)
  • Tries
    • Try
      • K(E);N_SPINS(F),P-FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • Q(i);CHECK,OGATE,P_SPINQ(i),XS(F)::R(G),XQ(i)
        • Q(i);CHECK,N_GUARD::R(G)+S(F)
        • Q(i);CHECK,N_GUARD::R(G)+S(F),XQ(i)
        • P(c);XS(D)::R(G)+S(F),DCHECK
      • Refutation
        • Q(i);P_PINS(F)
  • Actual
    • K(E);N_SPINS(F),P-FLIGHT,XP(d)
    • Threat
      • R(G)+S(F),DCHECK
    • Vars
      • Q(i);CHECK,N_GUARD::R(G)+S(F),XQ(i)
      • P(c);CHECK,OGATE,XS(D)::P(C)
      • P(h);CHECK,S_CUTQ(i)::R(G)+S(F)
      • Q(i);OGATE,P_SPINQ(i),XS(F)::R(G),XQ(i)
      • P(g);::R(G)+S(F),DCHECK,XP(g)
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