MESON Chess Problem Database

Problem Display
PID: 222473 (1K6/1PR2pb1/2Pk1Bp1/3qp3/4Q3/P7/8/1B6 w - - 0 1)

Anonymous

Philadelphia Times, 1883

(First published on Sun Jun 10 1883)

1K6/1PR2pb1/2Pk1Bp1/3qp3/4Q3/P7/8/1B6

#2

8 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qb4#
    • 1...Qa2
      • 2.Qxe5#
    • 1...Qb3
      • 2.Qxe5#
    • 1...Qc4
      • 2.Qxe5#
    • 1...Qxc6
      • 2.Qxc6#
      • 2.Qxe5#
    • 1...Qd1
      • 2.Qxe5#
    • 1...Qd2
      • 2.Qxe5#
    • 1...Qd3
      • 2.Qxe5#
  • Tries
    • 1.Qb4+?
      • 1...Ke6
        • 2.Qe7#
      • 1...Qc5!
  • Keys
    • 1.Ba2!
      • threat
        • 2.Qxd5#
      • 1...Kc5
        • 2.Qb4#
      • 1...Ke6
        • 2.Qxe5#
      • 1...Qxa2
        • 2.Qxe5#
      • 1...Qxe4
        • 2.Be7#
      • 1...Qxc6
        • 2.Be7#
        • 2.Qxc6#
        • 2.Qxe5#
      • 1...Qb3
        • 2.Qxe5#
      • 1...Qc4
        • 2.Qxe5#
      • 1...Qe6
        • 2.Qb4#
      • 1...Qd1
        • 2.Be7#
        • 2.Qb4#
        • 2.Qxe5#
      • 1...Qd2
        • 2.Be7#
        • 2.Qxe5#
      • 1...Qd3
        • 2.Be7#
        • 2.Qb4#
        • 2.Qxe5#
      • 1...Qd4
        • 2.Be7#
      • 1...Qa5
        • 2.Be7#
      • 1...Qb5
        • 2.Be7#
      • 1...Qc5
        • 2.Be7#
        • 2.Rd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 3
  • Sets
    • K(c);S_FLIGHT::QAB1(C)
    • Q(a);N_GUARD::QAB1(C),XP(b)
    • Q(a);N_GUARD,P_PINP(F)::QAB1(C),XP(b)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);OGATE,P-FLIGHT::QAR1(C)
      • Refutation
        • Q(a);P_SPINQ(a)
  • Actual
    • B(A);
    • Threat
      • QAR1(C),XQ(a)
    • Vars
      • K(c);S_FLIGHT::QAB1(C)
      • K(c);P-FLIGHT,P_SPINP(b),P_SPINQ(a)::QAR1(C),XP(b)
      • Q(a);N_GUARD,XB(A)::QAB1(C),XP(b)
      • Q(a);XQ(C)::B(E)
      • Q(a);N_GUARD,P_PINP(F)::QAB1(C),XP(b)
      • Q(a);N_GUARD::QAB1(C),XP(b)
      • Q(a);N_GUARD::QAB(C)
      • Q(a);::B(E)
      • Q(a);P_PINP(F)::B(E)
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