MESON Chess Problem Database

Problem Display
PID: 141463 (2RNq3/3kp3/B2PR3/1P3p1Q/5K2/8/8/8 w - - 0 1)

Beck, Gyula

Grantham Journal, 1926

(First published on Sat Dec 4 1926)

2RNq3/3kp3/B2PR3/1P3p1Q/5K2/8/8/8

#2

8 + 4

14868 Pirnie Collection 2011

SOLUTION

  • SOUND
  • Sets
    • 1...exd6
      • 2.Qxe8#
  • Tries
    • 1.Qf3?
      • threat
        • 2.Qc6#
        • 2.Qb7#
      • 1...Qh5
        • 2.Qc6#
      • 1...Qg6
        • 2.Qc6#
      • 1...Qf7
        • 2.Qc6#
      • 1...Qf8
        • 2.Qc6#
      • 1...Qg8
        • 2.Qc6#
      • 1...Qh8
        • 2.Qc6#
      • 1...Qxd8!
    • 1.Qh1?
      • threat
        • 2.Qc6#
        • 2.Qb7#
      • 1...Qh5
        • 2.Qc6#
      • 1...Qg6
        • 2.Qc6#
      • 1...Qf7
        • 2.Qc6#
      • 1...Qf8
        • 2.Qc6#
      • 1...Qg8
        • 2.Qc6#
      • 1...Qh8
        • 2.Qc6#
      • 1...Qxd8!
  • Keys
    • 1.Sb7!
      • threat
        • 2.Sc5#
      • 1...Kxe6
        • 2.Qxf5#
      • 1...Kxc8
        • 2.Qxe8#
      • 1...Qxc8
        • 2.Rxe7#
      • 1...exd6
        • 2.Qxe8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(c);XP(E)::QAB1(C),XQ(d)
  • Tries
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • Q(d);::QAB1(C)
      • Refutation
        • Q(d);XS(H)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • Q(d);::QAB1(C)
      • Refutation
        • Q(d);XS(H)
  • Actual
    • S(H);
    • Threat
      • S(H)
    • Vars
      • K(b);OGATEB,S_FLIGHT,XR(F)::QAB1(C),XP(a)
      • K(b);S_FLIGHT,XR(G)::QAR2(C),XQ(d)
      • Q(d);N_GUARD,SBLOCK,XR(G)::R1(F),XP(c)
      • P(c);XP(E)::QAB1(C),XQ(d)
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