MESON Chess Problem Database

Problem Display
PID: 72424 (8/4p3/2P2p2/4kp2/R4R1P/BQK5/6n1/8 w - - 0 1)

Buchwald, Julius

Ajan Sana, 1932

8/4p3/2P2p2/4kp2/R4R1P/BQK5/6n1/8

#2

7 + 5

5759 Selected Compositions of Julius Buchwald 2005

SOLUTION

  • SOUND
  • Sets
    • 1...e6
      • 2.Qb5#
  • Tries
    • 1.Rf3?
      • 1...Sxh4
        • 2.Re3#
      • 1...Se3
        • 2.Rxe3#
      • 1...Se1
        • 2.Re3#
      • 1...Sf4
        • 2.Re3#
      • 1...e6
        • 2.Qb5#
      • 1...f4!
  • Keys
    • 1.Kc4!
      • 1...Se3+
        • 2.Qxe3#
      • 1...Kxf4
        • 2.Kd5#
      • 1...Ke6
        • 2.Kd4#
      • 1...Sxf4
        • 2.Qe3#
      • 1...Sxh4
        • 2.Qe3#
      • 1...Se1
        • 2.Qe3#
      • 1...e6
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • P(e);SBLOCK::QAR(B)
  • Tries
    • Try
      • R(E);
      • Vars
        • S(a);N_GUARD,XP(F)::R(E)
        • S(a);N_GUARD::R(E),XS(a)
        • S(a);N_GUARD::R(E)
        • P(e);SBLOCK::QAR(B)
      • Refutation
        • P(c);
  • Actual
    • K(C);P-FLIGHT
    • Vars
      • S(a);CHECK,N_GUARD::QAR2(B),XS(a)
      • K(b);S_FLIGHT,XR(E)::R(D)+K(C)
      • K(b);P-FLIGHT::QAB(B)+K(C)
      • S(a);N_GUARD,XR(E)::QAR2(B)
      • S(a);N_GUARD,XP(F)::QAR2(B)
      • S(a);N_GUARD::QAR2(B)
      • P(e);SBLOCK::QAB(B)
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