MESON Chess Problem Database

Problem Display
PID: 47483 (R7/4N3/4p3/1k1nR3/3B3Q/1PP5/8/5K2 w - - 0 1)

Rice, John Michael

6th Prize, Casa-70 JT, 2002

R7/4N3/4p3/1k1nR3/3B3Q/1PP5/8/5K2

#2

8 + 3

56 The Problemist 2003

SOLUTION

  • SOUND
  • Tries
    • 1.Ba7?
      • threat
        • 2.Qa4#
      • 1...Ka5
        • 2.Qa4#
      • 1...Ka6!
    • 1.Rxe6?
      • 1...Sxc3
        • 2.Rb6#
      • 1...Sxe7
        • 2.Rb6#
      • 1...Sb4
        • 2.Rb6#
        • 2.c4#
      • 1...Sf4
        • 2.Rb6#
      • 1...Sb6
        • 2.Rxb6#
      • 1...Sf6
        • 2.Rb6#
      • 1...Sc7
        • 2.Rb6#
      • 1...Se3+!
  • Keys
    • 1.Bc5!
      • threat
        • 2.Qc4#
      • 1...Se3+
        • 2.Bxe3#
      • 1...Kxc5
        • 2.Qb4#
      • 1...Sxe7
        • 2.Qa4#
      • 1...Sf4
        • 2.c4#
      • 1...Sb6
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(D);
      • Threat
        • QAB1(E)
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
      • Refutation
        • K(a);N_SPINS(b),S_FLIGHT
    • Try
      • R(F);N_PINS(b),XP(c)
      • Vars
        • S(b);N_GUARD,XP(C)::R1(F)
        • S(b);N_GUARD,XS(G)::R1(F)
        • S(b);N_GUARD::R1(F)
        • S(b);N_GUARD::R1(F),XS(b)
      • Refutation
        • S(b);CHECK
  • Actual
    • B(D);N_PINS(b)
    • Threat
      • QAB1(E)
    • Vars
      • S(b);CHECK,OGATEB::R(F)+B(D),XS(b)
      • K(a);P-FLIGHT,P_SPINS(b),XB(D)::QAB1(E)
      • S(b);XS(G)::QAB1(E)
      • S(b);::P(C)
      • S(b);N_GUARD::QAR1(E)
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