MESON Chess Problem Database

Problem Display
PID: 206420 (8/8/8/8/3p4/3K4/k7/1NQ5 w - - 0 1)

Schonberger, Tibor

Magyar Sakkvilag, 1925

8/8/8/8/3p4/3K4/k7/1NQ5

#2

3 + 2

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ka1
      • 2.Sc3#
    • 1...Kb3
      • 2.Qa3#
  • Tries
    • 1.Kc2?
      • threat
        • 2.Qb2#
        • 2.Qa3#
      • 1...Ka1
        • 2.Sc3#
        • 2.Qb2#
        • 2.Qa3#
      • 1...d3+!
    • 1.Kxd4?
      • 1...Ka1
        • 2.Sc3#
      • 1...Kb3!
  • Keys
    • 1.Kc4!
      • 1...Ka1
        • 2.Sc3#
      • 1...d3
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(a);P-FLIGHT::QAR(B)+S(A)
    • K(a);S_FLIGHT::QAR1(B)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Threat
        • DUALS(2)
      • Refutation
        • P(b);CHECK
    • Try
      • K(C);P-FLIGHT,XP(b)
      • Vars
        • K(a);P-FLIGHT::QAR(B)+S(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • K(C);S_FLIGHT
    • Vars
      • K(a);P-FLIGHT::QAR(B)+S(A)
      • P(b);N_GUARD::S(A)
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