MESON Chess Problem Database

Problem Display
PID: 162140 (5Q2/K5pB/1N2p1r1/NRnbk3/2P3p1/2Ppb3/6P1/3nR3 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Welt im Bild, 1938

(First published on Sun Nov 13 1938)

5Q2/K5pB/1N2p1r1/NRnbk3/2P3p1/2Ppb3/6P1/3nR3

#2

10 + 10

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Rf6
      • 2.Qb8#
    • 1...Be4
      • 2.Sd7#
    • 1...Se4
      • 2.Sc6#
  • Tries
    • 1.Sc6+?
      • 1...Ke4
        • 2.Bxg6#
      • 1...Bxc6!
    • 1.Sd7+?
      • 1...Ke4
        • 2.Bxg6#
      • 1...Sxd7+!
    • 1.Rxe3+?
      • 1...Be4
        • 2.Sc6#
        • 2.Sd7#
        • 2.Rxc5#
      • 1...Se4
        • 2.Sc6#
        • 2.Sd7#
      • 1...Sxe3!
  • Keys
    • 1.g3!
      • threat
        • 2.Qf4#
      • 1...Ke4
        • 2.Qf4#
      • 1...Rf6
        • 2.Qb8#
      • 1...Be4
        • 2.Sd7#
      • 1...Se4
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(i);SBLOCK::QAB(J)
    • B(f);N_SPINB(c),P_SPINS(e),SBLOCK::S(G)
    • S(e);N_SPINB(c),P_PINS(G),P_SPINB(f),SBLOCK::S(E)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(g);P-FLIGHT,P_SPINR(i)::B(I),XR(i)
      • Refutation
        • B(f);P_SPINS(e),XS(E)
    • Try
      • S(G);CHECK
      • Vars
        • K(g);P-FLIGHT,P_SPINR(i)::B(I),XR(i)
      • Refutation
        • S(e);CHECK,XS(G)
    • Try
      • R(A);CHECK,XB(c)
      • Refutation
        • S(a);XR(A)
  • Actual
    • P(B);
    • Threat
      • QAB1(J)
    • Vars
      • K(g);P-FLIGHT,P_SPINR(i)::QAR1(J)
      • R(i);SBLOCK::QAB(J)
      • B(f);N_SPINB(c),P_SPINS(e),SBLOCK::S(G)
      • S(e);N_SPINB(c),P_PINS(G),P_SPINB(f),SBLOCK::S(E)
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