MESON Chess Problem Database

Problem Display
PID: 163710 (1Q2b3/8/8/3R4/1R5r/2kN4/4P2P/1K6 w - - 0 1)

Stooss, Walter

Basler Nachrichten, 1939

(First published on Sat Feb 11 1939)

1Q2b3/8/8/3R4/1R5r/2kN4/4P2P/1K6

#2

7 + 3

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb4+
      • 2.Qxb4#
  • Tries
    • 1.Qf4?
      • threat
        • 2.Rc5#
        • 2.Qc1#
      • 1...Rh5
        • 2.Qc1#
      • 1...Ba4
        • 2.Rc5#
      • 1...Bb5
        • 2.Qc1#
      • 1...Bf7
        • 2.Qc1#
      • 1...Rxf4!
  • Keys
    • 1.Qg3!
      • threat
        • 2.Qe1#
      • 1...Rxb4+
        • 2.Sb2#
      • 1...Kd2
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(b);CHECK,OGATE,XR(E)::QAB1(G),XR(b)
  • Tries
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);::QAR2(G)
        • B(c);::R(F)
        • B(c);::QAR2(G)
      • Refutation
        • R(b);XQ(G)
  • Actual
    • Q(G);
    • Threat
      • QAB(G)
    • Vars
      • R(b);CHECK,SBLOCK,XR(E)::QAR(G)+S(D)
      • K(a);S_FLIGHT::R(F)+S(D)
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