MESON Chess Problem Database

Problem Display
PID: 203465 (8/6N1/3p4/4k1K1/2Q5/8/8/8 w - - 0 1)

Kovacs, Florian Janos

Schweizerische Schachzeitung, 1924

8/6N1/3p4/4k1K1/2Q5/8/8/8

#2

3 + 2

5454 Near Snap 2020
3713 Snap 2020
6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.Qf4#
  • Tries
    • 1.Kg4?
      • 1...d5
        • 2.Qf4#
      • 1...Kf6!
    • 1.Kh6?
      • 1...Kf6
        • 2.Qe6#
      • 1...d5!
    • 1.Qa4?
      • 1...d5
        • 2.Qf4#
      • 1...Kd5!
    • 1.Qb4?
      • 1...d5
        • 2.Qf4#
      • 1...Kd5!
    • 1.Qg4?
      • 1...d5
        • 2.Qf4#
      • 1...Kd5!
    • 1.Qh4?
      • 1...d5
        • 2.Qf4#
      • 1...Kd5!
  • Keys
    • 1.Sf5!
      • 1...d5
        • 2.Qe2#

This anticipates 149799(1953), 23566(2000)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • P(b);SBLOCK::QAB1(A)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • P(b);SBLOCK::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Vars
        • P(b);SBLOCK::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • P(b);SBLOCK::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • P(b);SBLOCK::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • P(b);SBLOCK::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(C);
    • Vars
      • P(b);SBLOCK::QAR(A)
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