MESON Chess Problem Database

Problem Display
PID: 89107 (8/8/2P5/8/8/6n1/Q3P3/2k1K2R w K - 0 1)

Rice, John Michael

The Problemist, 1991

8/8/2P5/8/8/6n1/Q3P3/2k1K2R

#2

5 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sxe2
      • 2.Kxe2#
    • 1...Se4
      • 2.0-0#
    • 1...Sf5
      • 2.Kf2#
      • 2.0-0#
    • 1...Sh5
      • 2.Kf2#
      • 2.0-0#
  • Tries
    • 1.Kf2+?
      • 1...Sf1
        • 2.Rxf1#
      • 1...Sxh1+!
  • Keys
    • 1.c7!
      • threat
        • 2.c8Q#
        • 2.c8R#
      • 1...Sxh1
        • 2.c8Q#
        • 2.c8R#
      • 1...Sxe2
        • 2.Kxe2#
      • 1...Sf1
        • 2.c8Q#
        • 2.c8R#
      • 1...Se4
        • 2.0-0#
      • 1...Sf5
        • 2.Kf2#
        • 2.c8Q#
        • 2.c8R#
        • 2.0-0#
      • 1...Sh5
        • 2.Kf2#
        • 2.c8Q#
        • 2.c8R#
        • 2.0-0#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(b);XP(D)::R(B)+K(A),XS(b)
    • S(b);::0-0
  • Tries
    • Try
      • K(A);CHECK,S_FLIGHT
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::R(B),XS(b)
      • Refutation
        • S(b);CHECK,XR(B)
  • Actual
    • P(E);
    • Threat
      • P=Q
    • Vars
      • S(b);XR(B)::P=Q
      • S(b);XP(D)::R(B)+K(A),XS(b)
      • S(b);::P=Q
      • S(b);::0-0
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