MESON Chess Problem Database

Problem Display
PID: 169980 (8/1Np5/8/8/k1K3pQ/8/8/2b5 w - - 0 1)

Lincoln, Robert A

StrateGems, 2017

8/1Np5/8/8/k1K3pQ/8/8/2b5

#2

3 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Qe1?
      • threat
        • 2.Qb4#
        • 2.Qa5#
      • 1...Bd2
        • 2.Qa1#
      • 1...Ba3
        • 2.Qa5#
        • 2.Qd1#
      • 1...c5
        • 2.Qa5#
      • 1...Ka3!
    • 1.Qf6?
      • threat
        • 2.Qa6#
      • 1...Ka3
        • 2.Qa1#
      • 1...Bd2
        • 2.Qa1#
      • 1...c6!
  • Keys
    • 1.Qh8!
      • threat
        • 2.Qa8#
      • 1...Ka3
        • 2.Qa1#
      • 1...Bd2
        • 2.Qa1#
      • 1...Be3
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);OGATE::QAR(B)
        • P(d);::QAR1(B)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAR2(B)
      • Vars
        • K(b);P-FLIGHT::QAR2(B)
        • B(a);N_GUARD::QAR(B)
      • Refutation
        • P(d);
  • Actual
    • Q(B);
    • Threat
      • QAR(B)
    • Vars
      • K(b);P-FLIGHT::QAR2(B)
      • B(a);N_GUARD::QAR(B)
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