MESON Chess Problem Database

Problem Display
PID: 90226 (6b1/K2nNrNq/QP3RrB/2p1k3/4p1n1/b1P5/8/4R3 w - - 0 1)

Buchwald, Julius

Die Schwalbe, 1949

6b1/K2nNrNq/QP3RrB/2p1k3/4p1n1/b1P5/8/4R3

#2

9 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sc6+?
      • 1...Kd5
        • 2.Rd1#
        • 2.c4#
      • 1...Kxf6!
    • 1.Rxe4+?
      • 1...Kxf6
        • 2.Sd5#
        • 2.Sh5#
        • 2.Se8#
        • 2.Re6#
      • 1...Kxe4!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Qd6#
      • 1...Kxf6
        • 2.Qd6#
      • 1...Rgxf6
        • 2.Qd5#
      • 1...Rfxf6
        • 2.Rxe4#
      • 1...Sgxf6
        • 2.Sc6#
      • 1...Sdxf6
        • 2.Qg3#
      • 1...e3
        • 2.Qf5#
      • 1...c4
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(H);CHECK
      • Refutation
        • K(e);N_SPINP(b),S_FLIGHT,XR(E)
    • Try
      • R(A);CHECK,XP(b)
      • Refutation
        • K(e);P-FLIGHT,XR(A)
  • Actual
    • Q(C);
    • Threat
      • QAB1(C)
    • Vars
      • K(e);N_SPINP(b),S_FLIGHT,XR(E)::QAR2(C)
      • R(f);SBLOCK,XR(E)::QAR1(C)
      • R(h);SBLOCK,XR(E)::R1(A),XP(b)
      • S(c);SBLOCK,XR(E)::S(H)
      • S(g);P_PINS(H),SBLOCK,XR(E)::QAB(C)
      • P(b);OGATE::QAR1(C)
      • P(d);N_GUARD::QAB1(C)
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