MESON Chess Problem Database

Problem Display
PID: 219054 (8/5p1N/4p3/4P3/2QK1k1p/4pq2/5RPP/8 w - - 0 1)

Anonymous

Baltimore American and Commercial Advertiser, 1881

(First published on Sun Jan 9 1881)

8/5p1N/4p3/4P3/2QK1k1p/4pq2/5RPP/8

#2

7 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Kd3+?
      • 1...Kf5
        • 2.Qe4#
      • 1...Kxe5!
    • 1.Qd5?
      • threat
        • 2.Qxf3#
        • 2.Qe4#
      • 1...Kg4
        • 2.Qxf3#
      • 1...Kf5
        • 2.Qe4#
      • 1...Qxf2
        • 2.Qe4#
      • 1...exf2
        • 2.Qxf3#
      • 1...f5
        • 2.Qxf3#
      • 1...exd5!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Qxf3#
        • 2.Qe4#
      • 1...Kg4
        • 2.Qxf3#
      • 1...Kf5
        • 2.Qe4#
      • 1...Qxf2
        • 2.Qe4#
      • 1...exf2
        • 2.Qxf3#
      • 1...f5
        • 2.Qxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(E);CHECK,P-FLIGHT
      • Vars
        • K(c);P-FLIGHT::QAB1(D)
      • Refutation
        • K(c);N_SPINQ(b),S_FLIGHT,XP(F)
    • Try
      • Q(D);
      • Threat
        • DUALS(2)
      • Vars
        • K(c);N_SPINQ(b),P-FLIGHT::QAB1(D),XQ(b)
        • K(c);P-FLIGHT::QAB1(D)
        • Q(b);N_SPINQ(b),XR(A)::QAR1(D)
        • P(a);N_SPINQ(b),XR(A)::QAR1(D),XQ(b)
        • P(f);SBLOCK::QAR1(D),XQ(b)
      • Refutation
        • P(e);XQ(D)
  • Actual
    • Q(D);
    • Threat
      • DUALS(2)
    • Vars
      • K(c);N_SPINQ(b),P-FLIGHT::QAB1(D),XQ(b)
      • K(c);P-FLIGHT::QAB1(D)
      • Q(b);N_SPINQ(b),XR(A)::QAR1(D)
      • P(a);N_SPINQ(b),XR(A)::QAR1(D),XQ(b)
      • P(f);SBLOCK::QAR1(D),XQ(b)
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