MESON Chess Problem Database

Problem Display
PID: 218507 (8/5B2/5p2/QP2rk2/3K3P/6P1/4PN2/8 w - - 0 1)

Cochrane, CH

Cincinnati Commercial, 1881

8/5B2/5p2/QP2rk2/3K3P/6P1/4PN2/8

#2

8 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb5
      • 2.Qxb5#
      • 2.e4#
    • 1...Rc5
      • 2.e4#
  • Tries
    • 1.Qa8?
      • threat
        • 2.Qf3#
      • 1...Re4+
        • 2.Qxe4#
      • 1...Rd5+
        • 2.Qxd5#
      • 1...Re3!
  • Keys
    • 1.b6!
      • threat
        • 2.e4#
      • 1...Rd5+
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • R(a);N_GUARD::P(A)
  • Tries
    • Try
      • Q(F);
      • Threat
        • QAR2(F)
      • Vars
        • R(a);CHECK,N_GUARD::QAB1(F),XR(a)
        • R(a);CHECK,OGATEB::QAR2(F),XR(a)
      • Refutation
        • R(a);
  • Actual
    • P(G);P_PINR(a)
    • Threat
      • P(A)
    • Vars
      • R(a);CHECK,OGATEB::QAR2(F),XR(a)
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