MESON Chess Problem Database

Problem Display
PID: 73773 (B1k1K1R1/3pPQ2/N7/1r3r2/8/b7/8/8 w - - 0 1)

Buchwald, Julius

South African Chess Magazine, 1947

B1k1K1R1/3pPQ2/N7/1r3r2/8/b7/8/8

#2

6 + 5

5759 Selected Compositions of Julius Buchwald 2005

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf7
      • 2.Kxf7#
    • 1...Bxe7
      • 2.Kxe7#
    • 1...d5
      • 2.Qe6#
      • 2.Qxf5#
    • 1...d6
      • 2.Qe6#
  • Tries
    • 1.Qxf5?
      • threat
        • 2.Kf7#
        • 2.Qxd7#
      • 1...Bxe7
        • 2.Kxe7#
        • 2.Qxd7#
      • 1...Rd5
        • 2.Kf7#
      • 1...Rb7
        • 2.Kf7#
      • 1...Rxf5!
  • Keys
    • 1.Kf8!
      • threat
        • 2.Kg7#
      • 1...Rxf7+
        • 2.Kxf7#
      • 1...Bxe7+
        • 2.Kxe7#
      • 1...d5
        • 2.Qxf5#
      • 1...d6
        • 2.e8Q#
        • 2.e8R#
      • 1...Rg5
        • 2.Qe8#
      • 1...Bb2
        • 2.e8Q#
        • 2.e8R#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(c);XQ(C)::R(F)+K(E),XR(c)
    • B(a);XP(B)::R(F)+K(E),XB(a)
    • P(d);OGATEB::QAB(C)
  • Tries
    • Try
      • Q(C);P_PINP(d),XR(c)
      • Threat
        • DUALS(2)
      • Vars
        • R(b);::R(F)+K(E)
      • Refutation
        • R(b);N_SPINP(d),XQ(C)
  • Actual
    • K(E);P-FLIGHT,P_SPINP(B),P_SPINQ(C)
    • Threat
      • R(F)+K(E)
    • Vars
      • R(c);CHECK,XQ(C)::R(F)+K(E),XR(c)
      • B(a);CHECK,XP(B)::R(F)+K(E),XB(a)
      • P(d);::QAB(C),XR(c)
      • P(d);N_PINP(B)::P=Q
      • R(c);N_PINQ(C)::QAR2(C)
      • B(a);N_PINP(B)::P=Q
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