MESON Chess Problem Database

Problem Display
PID: 231546 (8/8/1Q6/8/2p5/2kP4/8/N2RK3 w - - 0 1)

Schiffert, Gyorgy

Magyar Sakkvilag, 1927

8/8/1Q6/8/2p5/2kP4/8/N2RK3

#2

5 + 2

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...cxd3
      • 2.Rc1#
  • Tries
    • 1.Rb1?
      • 1...cxd3
        • 2.Rc1#
        • 2.Qc5#
        • 2.Qb4#
      • 1...Kxd3!
    • 1.Qa5+?
      • 1...Kd4
        • 2.Sc2#
      • 1...Kb2!
    • 1.Qb5?
      • 1...cxd3
        • 2.Rxd3#
      • 1...Kd4!
  • Keys
    • 1.Rd2!
      • 1...cxd3
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • P(b);SBLOCK,XP(D)::R(B)
  • Tries
    • Try
      • R(B);
      • Refutation
        • K(a);P-FLIGHT,XP(D)
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);S_FLIGHT::S(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • P(b);OGATE,XP(D)::R1(B),XP(b)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(B);
    • Vars
      • P(b);OGATEB,XP(D)::QAR2(E)
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