MESON Chess Problem Database

Problem Display
PID: 154940 (2n5/Q7/4PK2/2pkp3/1p6/3N1P1B/1P1R1P2/2q5 w - - 0 1)

Weigle, EH

Philadelphia Times, 1899

2n5/Q7/4PK2/2pkp3/1p6/3N1P1B/1P1R1P2/2q5

#2

9 + 6

119 Tidskrift for Schack 1909

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Qd7#
    • 1...Qxb2
      • 2.Qxc5#
    • 1...Qxd2
      • 2.Qxc5#
    • 1...Qa1
      • 2.Sxe5#
      • 2.Qxc5#
    • 1...Qb1
      • 2.Qxc5#
    • 1...Qd1
      • 2.Qxc5#
    • 1...Qe1
      • 2.Qxc5#
    • 1...Qf1
      • 2.Qxc5#
    • 1...Qg1
      • 2.Sxe5#
      • 2.Qxc5#
    • 1...Qh1
      • 2.Sxe5#
      • 2.Qxc5#
    • 1...Qc4
      • 2.Sxb4#
    • 1...c4
      • 2.Sxb4#
      • 2.Qc5#
  • Tries
    • 1.Sxc1+?
      • 1...Kc4
        • 2.Bf1#
        • 2.Qa6#
      • 1...Kc6!
    • 1.Qb7+?
      • 1...Kd4
        • 2.Qe4#
      • 1...Kd6
        • 2.Sxc1#
        • 2.Qd7#
      • 1...Kc4!
  • Keys
    • 1.Bf1!
      • threat
        • 2.Sxb4#
      • 1...Kc4
        • 2.Sxc1#
      • 1...Kd4
        • 2.Sxc1#
      • 1...Kc6
        • 2.Sxe5#
      • 1...Kd6
        • 2.Qd7#
      • 1...Qxd2
        • 2.Qxc5#
      • 1...Qxf1
        • 2.Qxc5#
      • 1...b3
        • 2.Sb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • K(d);P-FLIGHT::QAR1(I)
    • Q(a);N_GUARD,XP(A)::QAR1(I),XP(c)
    • Q(a);N_GUARD,XR(B)::QAR1(I),XP(c)
    • Q(a);N_GUARD::QAR1(I),XP(c)
    • Q(a);SBLOCK::R(B)+S(D),DCHECK,XP(b)
  • Tries
    • Try
      • S(D);CHECK,XQ(a)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(I);CHECK
      • Vars
        • K(d);OGATE,P-FLIGHT::QAR1(I)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • B(F);
    • Threat
      • R(B)+S(D),DCHECK,XP(b)
    • Vars
      • K(d);S_FLIGHT::B(F)+S(D),XQ(a)
      • K(d);P-FLIGHT,P_SPINP(c)::R(B)+S(D),XQ(a)
      • K(d);S_FLIGHT::S(D),XP(e)
      • K(d);P-FLIGHT::QAR1(I)
      • Q(a);N_GUARD,XR(B)::QAR1(I),XP(c)
      • Q(a);N_GUARD,XB(F)::QAR1(I),XP(c)
      • P(b);::R(B)+S(D),DCHECK
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