MESON Chess Problem Database

Problem Display
PID: 48090 (8/2p5/3N1K2/3k4/1Q6/8/1n2R3/8 w - - 0 1)

Lincoln, Robert A

Still More Fun with Chess Miniatures, 2002

8/2p5/3N1K2/3k4/1Q6/8/1n2R3/8

#2

4 + 3

145 StrateGems 2008

SOLUTION

  • SOUND
  • Sets
    • 1...c6
      • 2.Re5#
  • Tries
    • 1.Sb7?
      • threat
        • 2.Qc5#
        • 2.Qe4#
      • 1...Sc4
        • 2.Qc5#
      • 1...Sd3
        • 2.Qe4#
      • 1...Sa4
        • 2.Qe4#
      • 1...c5
        • 2.Qxc5#
        • 2.Qe4#
      • 1...Kc6!
    • 1.Rd2+?
      • 1...Kc6
        • 2.Qb5#
      • 1...Sd3!
  • Keys
    • 1.Re6!
      • 1...Kc6
        • 2.Qb5#
      • 1...cxd6
        • 2.Rxd6#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sd3
        • 2.Qc4#
      • 1...Sd1
        • 2.Qc4#
      • 1...Sa4
        • 2.Qc4#
      • 1...c5
        • 2.Qe4#
      • 1...c6
        • 2.Re5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK::R1(A)
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::QAR1(B)
        • S(a);::QAB1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
      • Refutation
        • S(a);P_SPINS(a)
  • Actual
    • R(A);
    • Vars
      • K(b);S_FLIGHT::QAB1(B)
      • P(c);OGATE,XS(C)::R1(A),XP(c)
      • S(a);N_GUARD::QAB1(B),XS(a)
      • S(a);N_GUARD::QAB1(B)
      • P(c);SBLOCK::QAB1(B)
      • P(c);SBLOCK::R1(A)
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