MESON Chess Problem Database

Problem Display
PID: 23219 (8/8/K1R5/N7/k7/2Q5/q3p3/8 w - - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

8/8/K1R5/N7/k7/2Q5/q3p3/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Qb3
      • 2.Qxb3#
    • 1...Qc4+
      • 2.Rxc4#
    • 1...Qa1
      • 2.Rc4#
      • 2.Qb3#
    • 1...Qc2
      • 2.Rc4#
    • 1...Qd2
      • 2.Rc4#
      • 2.Qb3#
  • Keys
    • 1.Sc4!
      • threat
        • 2.Sb6#
      • 1...Qxc4+
        • 2.Rxc4#
      • 1...Qb1
        • 2.Qa3#
      • 1...Qb3
        • 2.Qa5#
      • 1...Qb2
        • 2.Sxb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(a);N_GUARD::QAB1(A),XQ(a)
    • Q(a);CHECK,N_GUARD::R(D),XQ(a)
    • Q(a);N_GUARD::R(D)
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • Q(a);CHECK,OGATE,XS(B)::R(D),XQ(a)
      • Q(a);N_GUARD::QAR1(A)
      • Q(a);SBLOCK::QAR1(A)
      • Q(a);N_GUARD::S(B),XQ(a)
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