MESON Chess Problem Database

Problem Display
PID: 157320 (8/8/4P1K1/5R2/4k3/2Q5/6P1/3r4 w - - 0 1)

Speckmann, Werner

Die Schwalbe, 1942

8/8/4P1K1/5R2/4k3/2Q5/6P1/3r4

#2

5 + 2

5454 Near Snap 2016
15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Qe5#
    • 1...Rd4
      • 2.Qf3#
  • Tries
    • 1.Kg5?
      • threat
        • 2.Re5#
      • 1...Rd4
        • 2.Qf3#
      • 1...Rd5!
    • 1.Qc4+?
      • 1...Rd4
        • 2.Qe2#
      • 1...Ke3!
  • Keys
    • 1.g3!
      • threat
        • 2.Re5#
      • 1...Rd3
        • 2.Qe5#
      • 1...Rd4
        • 2.Qf3#
      • 1...Rd5
        • 2.Rf4#

This anticipates 17317(1946), 160804(1996)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(a);SBLOCK::QAR1(B)
    • R(a);SBLOCK::QAB1(B)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Threat
        • R1(C)
      • Vars
        • R(a);SBLOCK::QAB1(B)
      • Refutation
        • R(a);P_PINR(C)
    • Try
      • Q(B);CHECK
      • Vars
        • R(a);P_SPINR(a),SBLOCK::QAR2(B)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • P(A);
    • Threat
      • R1(C)
    • Vars
      • R(a);SBLOCK::QAR1(B)
      • R(a);SBLOCK::QAB1(B)
      • R(a);SBLOCK::R1(C)
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