MESON Chess Problem Database

Problem Display
PID: 213412 (4B3/3N2k1/8/3Q4/5K2/8/8/8 w - - 0 1)

Riczu, Lajos

Land og Folk, 1972

4B3/3N2k1/8/3Q4/5K2/8/8/8

#2

4 + 1

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sf8?
      • 1...Kf6
        • 2.Qf7#
        • 2.Qe5#
        • 2.Qg5#
      • 1...Kh6
        • 2.Qg5#
      • 1...Kxf8
        • 2.Qf7#
      • 1...Kh8!
    • 1.Qf7+?
      • 1...Kh6
        • 2.Qg6#
      • 1...Kh8!
    • 1.Qg8+?
      • 1...Kh6
        • 2.Qg6#
        • 2.Qh8#
      • 1...Kxg8!
  • Keys
    • 1.Sf6!
      • 1...Kxf6
        • 2.Qf7#
        • 2.Qe5#
      • 1...Kh6
        • 2.Qg5#
      • 1...Kf8
        • 2.Qf7#
      • 1...Kh8
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
        • K(a);S_FLIGHT,XS(C)::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);P-FLIGHT,XQ(B)
  • Actual
    • S(C);
    • Vars
      • K(a);S_FLIGHT::QAB1(B)
      • K(a);S_FLIGHT::QAR1(B)
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