MESON Chess Problem Database

Problem Display
PID: 109054 (1B6/7b/8/2pN4/r1Bkp2R/8/5P2/2R1K3 w - - 0 1)

Narroway, Edward

Apprenti Sorcier, 1993

1B6/7b/8/2pN4/r1Bkp2R/8/5P2/2R1K3

#2

7 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc4
      • 2.Rd1#
  • Tries
    • 1.Sf4?
      • threat
        • 2.Se2#
        • 2.Se6#
      • 1...Ra2
        • 2.Se6#
      • 1...Ra6
        • 2.Se2#
      • 1...Bf5
        • 2.Se2#
      • 1...Bg8
        • 2.Se2#
      • 1...Rxc4!
  • Keys
    • 1.f4!
      • threat
        • 2.Be5#
      • 1...Rxc4
        • 2.Rd1#
      • 1...e3
        • 2.f5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(a);SBLOCK,XB(D)::R(A)
  • Tries
    • Try
      • S(F);N_PINP(c)
      • Threat
        • DUALS(2)
      • Vars
        • R(a);::S(F)
        • B(e);::S(F)
      • Refutation
        • R(a);XB(D)
  • Actual
    • P(C);N_PINP(c)
    • Threat
      • B(G)
    • Vars
      • R(a);SBLOCK,XB(D)::R(A)
      • P(c);::R(E)+P(C)
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