MESON Chess Problem Database

Problem Display
PID: 23198 (8/2QB4/5B2/3r4/4k3/8/3nK3/8 w - - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

8/2QB4/5B2/3r4/4k3/8/3nK3/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Qe5#
    • 1...Rd4
      • 2.Qe5#
    • 1...Re5
      • 2.Qxe5#
    • 1...Rxd7
      • 2.Qe5#
  • Tries
    • 1.Qc4+?
      • 1...Rd4
        • 2.Qxd4#
      • 1...Sxc4!
  • Keys
    • 1.Qc3!
      • threat
        • 2.Qe3#
      • 1...Kf4
        • 2.Qe3#
      • 1...Rxd7
        • 2.Qe5#
      • 1...Rd3
        • 2.Qe5#
      • 1...Rd4
        • 2.Qxd4#
      • 1...Ra5
        • 2.Qd4#
      • 1...Rb5
        • 2.Qd4#
      • 1...Rc5
        • 2.Qd4#
      • 1...Re5
        • 2.Qxe5#
      • 1...Rf5
        • 2.Qd4#
      • 1...Rg5
        • 2.Qd4#
      • 1...Rh5
        • 2.Qd4#
      • 1...Rd6
        • 2.Qe5#
      • 1...Sf1
        • 2.Qf3#
      • 1...Sc4
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • R(c);N_GUARD::QAR1(C)
    • R(c);N_GUARD::QAR1(C),XR(c)
    • R(c);N_GUARD,XB(D)::QAR1(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAR1(C),XR(c)
      • Refutation
        • S(a);XQ(C)
  • Actual
    • Q(C);
    • Threat
      • QAR1(C)
    • Vars
      • K(b);P-FLIGHT::QAB1(C)
      • R(c);N_GUARD,XB(D)::QAR1(C)
      • R(c);N_GUARD::QAR1(C)
      • R(c);N_GUARD::QAR1(C),XR(c)
      • S(a);N_GUARD::QAB1(C)
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