MESON Chess Problem Database

Problem Display
PID: 17864 (8/7Q/2p1p2K/5r2/2p5/2B5/3RN3/1k6 w - - 0 1)

Macleod, Norman Alasdair

Parallele 50, 1951

8/7Q/2p1p2K/5r2/2p5/2B5/3RN3/1k6

#2

5 + 5

6455 The Chessboard Adventures of Norman Macleod 1996
3310 2345 Chess Problems 1997

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.Qb7#
    • 1...e5
      • 2.Qb7#
  • Tries
    • 1.Bb2?
      • threat
        • 2.Sc3#
      • 1...c3
        • 2.Sxc3#
      • 1...Ka2!
    • 1.Bd4?
      • 1...c5
        • 2.Qb7#
      • 1...e5
        • 2.Qb7#
      • 1...c3!
  • Keys
    • 1.Kg6!
      • 1...Rg5+
        • 2.Kxg5#
      • 1...Rf6+
        • 2.Kxf6#
      • 1...Rf1
        • 2.Qb7#
      • 1...Rf2
        • 2.Qb7#
      • 1...Rf3
        • 2.Qb7#
      • 1...Rf4
        • 2.Qb7#
      • 1...Ra5
        • 2.Qh1#
      • 1...Rb5
        • 2.Qh1#
      • 1...Rc5
        • 2.Qh1#
      • 1...Rd5
        • 2.Qh1#
      • 1...Re5
        • 2.Qh1#
      • 1...Rh5
        • 2.Kxh5#
      • 1...Rf7
        • 2.Kxf7#
      • 1...Rf8
        • 2.Qb7#
      • 1...c5
        • 2.Qb7#
      • 1...e5
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 14
    • REMOVED MATES = 0
  • Sets
    • P(d);::QAR(E)
    • P(e);::QAR(E)
  • Tries
    • Try
      • B(C);
      • Threat
        • S(B)
      • Vars
        • P(b);::S(B),XP(b)
      • Refutation
        • K(a);N_SPINR(c),S_FLIGHT
    • Try
      • B(C);
      • Vars
        • P(d);::QAR(E)
        • P(e);::QAR(E)
      • Refutation
        • P(b);
  • Actual
    • K(D);N_PINR(c),P-FLIGHT
    • Vars
      • R(c);CHECK::QAB(E)+K(D),XR(c)
      • R(c);N_GUARD::QAR(E)
      • R(c);::QAB(E)+K(D),XR(c)
      • P(d);S_CUTR(c)::QAR(E)
      • P(e);S_CUTR(c)::QAR(E)
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