MESON Chess Problem Database

Problem Display
PID: 80851 (8/1N4rQ/K2R2q1/R7/4kn1p/2p2p2/2PP1B1n/5N2 w - - 0 1)

Gosman, Gheorghe H

The Field, 1949

(First published on Sat Aug 6 1949)

8/1N4rQ/K2R2q1/R7/4kn1p/2p2p2/2PP1B1n/5N2

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qf5
      • 2.Rd4#
      • 2.Qxf5#
    • 1...Qxh7
      • 2.Rd4#
    • 1...cxd2
      • 2.Sxd2#
    • 1...h3
      • 2.Sg3#
  • Tries
    • 1.Qxg6+?
      • 1...Sxg6
        • 2.Rd4#
      • 1...Rxg6!
  • Keys
    • 1.Qxh4!
      • threat
        • 2.d3#
      • 1...Qxd6+
        • 2.Sxd6#
      • 1...cxd2
        • 2.Sxd2#
      • 1...Qg4
        • 2.Rd4#
      • 1...Sg4
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • Q(g);N_PINR(G),N_SPINQ(g),XQ(I)::R1(G)
    • P(b);XP(C)::S(A),XP(b)
    • P(f);N_GUARD::S(A)
  • Tries
    • Try
      • Q(I);CHECK,N_SPINR(G),XQ(g)
      • Vars
        • S(e);XQ(I)::R1(G)
      • Refutation
        • R(h);P_PINR(G),XQ(I)
  • Actual
    • Q(I);N_PINQ(g),P_PINS(e),XP(f)
    • Threat
      • P(C)
    • Vars
      • Q(g);CHECK,XR(G)::S(H),XQ(g)
      • P(b);XP(C)::S(A),XP(b)
      • Q(g);N_PINR(G),N_SPINS(e)::R1(G)
      • S(a);N_SPINS(e),S_CUTQ(g)::S(A)
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