MESON Chess Problem Database

Problem Display
PID: 240536 (8/5B2/8/8/3B4/8/2P2Q2/1k1Kn3 w - - 0 1)

Lincoln, Robert A

Variantim, 2012

8/5B2/8/8/3B4/8/2P2Q2/1k1Kn3

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Sxc2
      • 2.Qxc2#
  • Tries
    • 1.Bc3?
      • threat
        • 2.Qb6#
      • 1...Sxc2
        • 2.Qxc2#
      • 1...Sd3!
    • 1.Be5?
      • threat
        • 2.Qb6#
      • 1...Sxc2
        • 2.Qxc2#
      • 1...Sd3!
    • 1.Bf6?
      • threat
        • 2.Qb6#
      • 1...Sxc2
        • 2.Qxc2#
      • 1...Sd3!
    • 1.Bg7?
      • threat
        • 2.Qb6#
      • 1...Sxc2
        • 2.Qxc2#
      • 1...Sd3!
    • 1.Bh8?
      • threat
        • 2.Qb6#
      • 1...Sxc2
        • 2.Qxc2#
      • 1...Sd3!
    • 1.Qg3?
      • threat
        • 2.Qb8#
        • 2.Qb3#
      • 1...Sxc2
        • 2.Qb3#
      • 1...Sf3
        • 2.Qb8#
      • 1...Sd3!
    • 1.Qd2?
      • threat
        • 2.Qc1#
        • 2.Qb4#
      • 1...Sxc2
        • 2.Qc1#
        • 2.Qxc2#
      • 1...Sd3!
    • 1.Qe2?
      • threat
        • 2.Qb5#
      • 1...Sxc2
        • 2.Qxc2#
      • 1...Sd3!
    • 1.Qh2?
      • threat
        • 2.Qb8#
      • 1...Sxc2
        • 2.Qxc2#
      • 1...Sd3!
    • 1.Qf4?
      • threat
        • 2.Qc1#
        • 2.Qb8#
      • 1...Sxc2
        • 2.Qc1#
      • 1...Sd3!
    • 1.Qf5?
      • threat
        • 2.Qb5#
      • 1...Sxc2
        • 2.Qxc2#
      • 1...Sd3!
    • 1.c3?
      • threat
        • 2.Qa2#
      • 1...Ka1
        • 2.Qa2#
      • 1...Sc2!
  • Keys
    • 1.c4!
      • threat
        • 2.Qb2#
      • 1...Sc2
        • 2.Qxc2#
      • 1...Sd3
        • 2.Qc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(b);OGATE,XP(B)::QAB1(C),XS(b)
  • Tries
    • Try
      • B(D);
      • Threat
        • QAR(C)
      • Vars
        • S(b);OGATE,XP(B)::QAB1(C),XS(b)
      • Refutation
        • S(b);
    • Try
      • B(D);
      • Threat
        • QAR(C)
      • Vars
        • S(b);OGATE,XP(B)::QAB1(C),XS(b)
      • Refutation
        • S(b);
    • Try
      • B(D);
      • Threat
        • QAR(C)
      • Vars
        • S(b);OGATE,XP(B)::QAB1(C),XS(b)
      • Refutation
        • S(b);
    • Try
      • B(D);
      • Threat
        • QAR(C)
      • Vars
        • S(b);OGATE,XP(B)::QAB1(C),XS(b)
      • Refutation
        • S(b);
    • Try
      • B(D);
      • Threat
        • QAR(C)
      • Vars
        • S(b);OGATE,XP(B)::QAB1(C),XS(b)
      • Refutation
        • S(b);
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);XP(B)::QAR2(C)
        • S(b);::QAB(C)
      • Refutation
        • S(b);
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Refutation
        • S(b);
    • Try
      • Q(C);
      • Threat
        • QAR(C)
      • Vars
        • S(b);OGATE,XP(B)::QAB1(C),XS(b)
      • Refutation
        • S(b);
    • Try
      • Q(C);
      • Threat
        • QAB(C)
      • Vars
        • S(b);OGATE,XP(B)::QAB1(C),XS(b)
      • Refutation
        • S(b);
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);XP(B)::QAR1(C)
      • Refutation
        • S(b);
    • Try
      • Q(C);
      • Threat
        • QAR(C)
      • Vars
        • S(b);OGATE,P_SPINS(b),XP(B)::QAB1(C),XS(b)
      • Refutation
        • S(b);
    • Try
      • P(B);
      • Threat
        • QAB1(C)
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • S(b);
  • Actual
    • P(B);
    • Threat
      • QAR1(C)
    • Vars
      • S(b);N_GUARD::QAB1(C),XS(b)
      • S(b);N_GUARD::QAB1(C)
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