MESON Chess Problem Database

Problem Display
PID: 84506 (5K2/7p/R5p1/2N3k1/4Q3/8/8/8 w - - 0 1)

Szwedowski, Leopold Mieczyslaw

Prapor peremogi, 1987

5K2/7p/R5p1/2N3k1/4Q3/8/8/8

#2

4 + 3

6490 yacpdb 2009
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kh6
      • 2.Qh4#
    • 1...h5
      • 2.Rxg6#
  • Tries
    • 1.Se6+?
      • 1...Kf6
        • 2.Qf4#
      • 1...Kh6
        • 2.Qh1#
        • 2.Qh4#
      • 1...Kh5!
    • 1.Sd7?
      • 1...Kh6
        • 2.Qh4#
      • 1...h6
        • 2.Ra5#
      • 1...h5
        • 2.Rxg6#
      • 1...Kh5!
    • 1.Rxg6+?
      • 1...Kh5
        • 2.Qg4#
      • 1...hxg6!
    • 1.Qg4+?
      • 1...Kh6
        • 2.Qh4#
      • 1...Kxg4!
  • Keys
    • 1.Ra4!
      • 1...Kh5
        • 2.Qh4#
      • 1...Kf6
        • 2.Qf4#
      • 1...Kh6
        • 2.Qh4#
      • 1...h6
        • 2.Qe5#
      • 1...h5
        • 2.Qf4#

This anticipates 172329(1996)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);P_SPINP(b),S_FLIGHT::QAR2(A)
    • P(c);N_GUARD,SBLOCK::R1(C),XP(b)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(B);
      • Vars
        • K(a);P_SPINP(b),S_FLIGHT::QAR2(A)
        • P(c);SBLOCK::R(C)
        • P(c);N_GUARD,SBLOCK::R1(C),XP(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(C);CHECK,XP(b)
      • Vars
        • K(a);P-FLIGHT::QAB1(A)
      • Refutation
        • P(c);XR(C)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P_SPINP(b),S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT,XQ(A)
  • Actual
    • R(C);
    • Vars
      • K(a);P-FLIGHT::QAR1(A)
      • K(a);S_FLIGHT::QAR2(A)
      • P(c);SBLOCK::QAR2(A)
      • P(c);SBLOCK::QAB1(A)
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