MESON Chess Problem Database

Problem Display
PID: 160154 (5B2/6nK/1p3p2/Np1k1p2/8/1N6/n2PQ1b1/b1R5 w - - 0 1)

Lincoln, Robert A

Chess Life, 1990

5B2/6nK/1p3p2/Np1k1p2/8/1N6/n2PQ1b1/b1R5

#2

7 + 9

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...bxa5
      • 2.Rc5#
  • Keys
    • 1.Rc6!
      • threat
        • 2.Rd6#
      • 1...Be4
        • 2.Qxb5#
      • 1...Be5
        • 2.Qxg2#
      • 1...Se8
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(g);N_GUARD,XS(E)::R1(A)
  • Actual
    • R(A);
    • Threat
      • R1(A)
    • Vars
      • B(c);SBLOCK::QAR2(C),XP(d)
      • B(a);SBLOCK::QAB(C),XB(c)
      • S(i);N_GUARD::QAB1(C)
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