MESON Chess Problem Database

Problem Display
PID: 201425 (8/5R1K/3P2Q1/1PPk4/4NpP1/2P4p/1p2P3/1q6 w - - 0 1)

Grabowski, Kazimierz

Teplitz-Schonauer Anzeiger, 1922

8/5R1K/3P2Q1/1PPk4/4NpP1/2P4p/1p2P3/1q6

#2

10 + 5

5454 Near Snap 2020
6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qf5#
  • Tries
    • 1.Rf5+?
      • 1...Kxe4
        • 2.Qe8#
        • 2.Qe6#
      • 1...Kc4!
    • 1.Qh5+?
      • 1...Kxe4
        • 2.Re7#
      • 1...Ke6
        • 2.Re7#
        • 2.Qf5#
      • 1...Kc4!
    • 1.Qg5+?
      • 1...Kxe4
        • 2.Re7#
      • 1...Ke6
        • 2.Re7#
        • 2.Qf5#
      • 1...Kc4!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Re7#
      • 1...Qxe4+
        • 2.Rf5#
      • 1...Kc4
        • 2.Rb7#
      • 1...Kxe4
        • 2.Re7#
      • 1...Ke5
        • 2.Re7#
      • 1...Ke6
        • 2.Re7#

Anticipated by 157731(1901)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(e);P-FLIGHT::QAR1(H)
  • Tries
    • Try
      • R(I);CHECK
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(H);CHECK,P_SPINS(C)
      • Vars
        • K(e);S_FLIGHT,XS(C)::R(I)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(H);CHECK,P_SPINS(C)
      • Vars
        • K(e);S_FLIGHT,XS(C)::R(I)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • Q(H);P_SPINS(C)
    • Threat
      • QAB(H)+R(I)
    • Vars
      • Q(a);CHECK,SBLOCK,XS(C)::QAB(H)+R(I),DCHECK
      • K(e);S_FLIGHT::QAB(H)+R(I)
      • K(e);S_FLIGHT,XS(C)::R(I)
      • K(e);P-FLIGHT::R(I)
      • K(e);S_FLIGHT::QAB(H)+R(I),DCHECK
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