MESON Chess Problem Database

Problem Display
PID: 74361 (1n6/3R4/BB2p3/4p3/2PPP3/R1pk2N1/5P2/2K5 w - - 0 1)

Rice, John Michael

The Problemist Supplement, 2007

1n6/3R4/BB2p3/4p3/2PPP3/R1pk2N1/5P2/2K5

#2

10 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Sc6
      • 2.c5#
    • 1...exd4
      • 2.Rxd4#
  • Tries
    • 1.Rd6?
      • threat
        • 2.dxe5#
      • 1...exd4
        • 2.Rxd4#
      • 1...Sc6
        • 2.c5#
      • 1...Sxa6!
  • Keys
    • 1.Ra4!
      • 1...Sxa6
        • 2.dxe5#
      • 1...Sxd7
        • 2.c5#
      • 1...exd4
        • 2.Rxd4#
      • 1...c2
        • 2.Ra3#
      • 1...Sc6
        • 2.c5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(e);N_GUARD::B(H)+P(E)
    • P(c);OGATE,XP(F)::R1(J),XP(c)
  • Tries
    • Try
      • R(J);
      • Threat
        • R(J)+P(F),XP(c)
      • Vars
        • P(c);OGATE,XP(F)::R1(J),XP(c)
        • S(e);N_GUARD::B(H)+P(E)
      • Refutation
        • S(e);XB(H)
  • Actual
    • R(C);N_PINP(a)
    • Vars
      • S(e);N_GUARD,XB(H)::R(J)+P(F),XP(c)
      • S(e);N_GUARD,XR(J)::B(H)+P(E)
      • P(c);OGATE,P_SPINP(c),XP(F)::R1(J),XP(c)
      • P(a);OGATEB::R(C)
      • S(e);N_GUARD::B(H)+P(E)
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