MESON Chess Problem Database

Problem Display
PID: 119930 (3R1Q2/K2P4/1p1r1P2/1P1k2N1/6P1/3P4/2P5/B7 w - - 0 1)

von Wardener, Friedrich Freiherr

Bohemia, 1902

3R1Q2/K2P4/1p1r1P2/1P1k2N1/6P1/3P4/2P5/B7

#2

11 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Re6
      • 2.c4#
    • 1...Rxf6
      • 2.c4#
    • 1...Rxd7+
      • 2.Rxd7#
  • Tries
    • 1.Qe7?
      • threat
        • 2.Qe5#
      • 1...Rxd7+
        • 2.Rxd7#
      • 1...Re6
        • 2.c4#
      • 1...Kc5!
    • 1.Qf7+?
      • 1...Kc5
        • 2.Qc4#
      • 1...Re6!
    • 1.Qg8+?
      • 1...Kc5
        • 2.Qc4#
      • 1...Re6!
  • Keys
    • 1.Se6!
      • 1...Rxd7+
        • 2.Sc7#
      • 1...Kxe6
        • 2.Qg8#
      • 1...Rxe6
        • 2.c4#
      • 1...Rc6
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(c);::P(B)
    • R(c);XP(G)::P(B)
    • R(c);CHECK,OGATE,P_SPINR(c),XP(I)::R(J),XR(c)
  • Tries
    • Try
      • Q(K);
      • Threat
        • QAR1(K)
      • Vars
        • R(c);CHECK,OGATE,P_SPINR(c),XP(I)::R(J),XR(c)
        • R(c);::P(B)
      • Refutation
        • K(a);P-FLIGHT,P_SPINR(c)
    • Try
      • Q(K);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(K)
      • Refutation
        • R(c);P_SPINR(c)
    • Try
      • Q(K);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(K)
      • Refutation
        • R(c);P_SPINR(c)
  • Actual
    • S(F);
    • Vars
      • R(c);CHECK,P_SPINR(c),XP(I)::S(F)
      • K(a);OGATEB,S_FLIGHT,XS(F)::QAB(K)
      • R(c);SBLOCK,XS(F)::P(B)
      • R(c);::S(F)
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