MESON Chess Problem Database

Problem Display
PID: 2212 (8/8/8/3Q1Pn1/8/4K1pb/8/4k3 w - - 0 1)

Cook, Eugene Beauharnais

New York Musical World, 1859

8/8/8/3Q1Pn1/8/4K1pb/8/4k3

#2

3 + 4

1679 American Chess Nuts 1868

SOLUTION

  • SOUND
  • Sets
    • 1...Kf1
      • 2.Qh1#
    • 1...Bf1
      • 2.Qd2#
    • 1...Bg4
      • 2.Qh1#
    • 1...Bxf5
      • 2.Qh1#
  • Tries
    • 1.Qg2?
      • threat
        • 2.Qe2#
      • 1...Kd1
        • 2.Qd2#
      • 1...Bg4
        • 2.Qh1#
        • 2.Qg1#
      • 1...Bxg2!
    • 1.Qe4?
      • threat
        • 2.Qb1#
      • 1...Kd1
        • 2.Qb1#
      • 1...Kf1
        • 2.Qh1#
      • 1...Bxf5
        • 2.Qh1#
      • 1...Bg4
        • 2.Qh1#
      • 1...Sxe4!
    • 1.Qc6?
      • threat
        • 2.Qc1#
      • 1...Kf1
        • 2.Qh1#
      • 1...Bg4
        • 2.Qh1#
      • 1...Kd1!
    • 1.Qa8?
      • threat
        • 2.Qa1#
      • 1...Kf1
        • 2.Qh1#
      • 1...Bxf5
        • 2.Qh1#
      • 1...Bg4
        • 2.Qh1#
      • 1...Kd1!
    • 1.Qd3?
      • threat
        • 2.Qb1#
        • 2.Qe2#
      • 1...Bxf5
        • 2.Qe2#
      • 1...Bf1
        • 2.Qb1#
        • 2.Qd2#
      • 1...Bg4!
    • 1.Qa5+?
      • 1...Kd1
        • 2.Qd2#
      • 1...Kf1!
    • 1.Qb5?
      • threat
        • 2.Qe2#
        • 2.Qb1#
      • 1...Kd1
        • 2.Qb1#
      • 1...Bxf5
        • 2.Qe2#
      • 1...Bf1
        • 2.Qb1#
      • 1...Bg4!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Qb1#
      • 1...Kd1
        • 2.Qb1#
      • 1...Kf1
        • 2.Qh1#
      • 1...Bxf5
        • 2.Qh1#
      • 1...Bg4
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(a);P-FLIGHT::QAR2(B)
    • B(c);SBLOCK::QAB1(B)
    • B(c);N_GUARD::QAR(B)
    • B(c);N_GUARD,XP(C)::QAR(B)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • B(c);XQ(B)
    • Try
      • Q(B);
      • Threat
        • QAR(B)
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
        • B(c);N_GUARD,XP(C)::QAR(B)
        • B(c);N_GUARD::QAR(B)
      • Refutation
        • S(d);XQ(B)
    • Try
      • Q(B);
      • Threat
        • QAR2(B)
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
        • B(c);N_GUARD::QAR(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAR(B)
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
        • B(c);N_GUARD,XP(C)::QAR(B)
        • B(c);N_GUARD::QAR(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • B(c);XP(C)::QAR1(B)
      • Refutation
        • B(c);
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
        • B(c);XP(C)::QAR1(B)
        • B(c);SBLOCK::QAR(B)
      • Refutation
        • B(c);
  • Actual
    • Q(B);
    • Threat
      • QAR(B)
    • Vars
      • K(a);P-FLIGHT::QAR2(B)
      • B(c);N_GUARD,XP(C)::QAR(B)
      • B(c);N_GUARD::QAR(B)
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