MESON Chess Problem Database

Problem Display
PID: 68598 (8/7b/2q2r2/1Q1p4/5N2/2k2p2/2rN1K2/n1R1B3 w - - 0 1)

Gocher, J

The Chess Player's Chronicle (Staunton), 1861

8/7b/2q2r2/1Q1p4/5N2/2k2p2/2rN1K2/n1R1B3

#2

6 + 8

SOLUTION

  • SOUND
  • Tries
    • 1.Qb3+?
      • 1...Kd4
        • 2.Qe3#
      • 1...Sxb3!
    • 1.Qa5+?
      • 1...Kb2
        • 2.Rb1#
        • 2.Qxa1#
      • 1...Kd4!
  • Keys
    • 1.Se2+!
      • 1...fxe2+
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • K(c);N_SPINR(b),OGATE,S_FLIGHT::QAB1(F)
      • Refutation
        • S(a);XQ(F)
    • Try
      • Q(F);CHECK
      • Refutation
        • K(c);N_SPINR(b),S_FLIGHT
  • Actual
    • S(E);CHECK,N_SPINS(C)
    • Vars
      • P(d);CHECK,XS(E)::B(B)+S(C)
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