MESON Chess Problem Database

Problem Display
PID: 166704 (8/8/8/3Q4/8/2p1K1pb/8/5k1N w - - 0 1)

Lincoln, Robert A

StrateGems, 2016

8/8/8/3Q4/8/2p1K1pb/8/5k1N

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Bg2
      • 2.Qd1#
    • 1...g2
      • 2.Qd1#
  • Tries
    • 1.Sxg3+?
      • 1...Kg1
        • 2.Qh1#
      • 1...Ke1!
    • 1.Qf3+?
      • 1...Ke1
        • 2.Qe2#
      • 1...Kg1!
  • Keys
    • 1.Sf2!
      • threat
        • 2.Qh1#
      • 1...Ke1
        • 2.Qd1#
      • 1...Kg1
        • 2.Qh1#
      • 1...Bg2
        • 2.Qd1#
      • 1...g2
        • 2.Qd1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(d);SBLOCK::QAR2(C)
    • P(c);SBLOCK::QAR2(C)
  • Tries
    • Try
      • S(A);CHECK,XP(c)
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(A);
    • Threat
      • QAR2(C)
    • Vars
      • K(a);P-FLIGHT::QAR1(C)
      • B(d);SBLOCK::QAR2(C)
      • P(c);SBLOCK::QAR2(C)
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