MESON Chess Problem Database

Problem Display
PID: 161078 (KnN5/2p5/n1k5/2p1P3/P5B1/8/P2p1B2/Q2RR3 w - - 0 1)

Healey, Percy E

Illustrated London News, 1902

KnN5/2p5/n1k5/2p1P3/P5B1/8/P2p1B2/Q2RR3

#2

10 + 6

15351 SCPF/BCPS Black Books 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Sd7
      • 2.Bf3#
    • 1...dxe1B
      • 2.Bf3#
    • 1...c4
      • 2.Se7#
  • Tries
    • 1.Qd4?
      • threat
        • 2.Bf3#
        • 2.Qe4#
      • 1...dxe1Q
        • 2.Qd5#
      • 1...dxe1S
        • 2.Qe4#
        • 2.Qd5#
      • 1...dxe1R
        • 2.Qd5#
      • 1...Sb4
        • 2.Qxc5#
      • 1...cxd4!
    • 1.Qb1?
      • threat
        • 2.Se7#
        • 2.Qe4#
        • 2.Qb7#
      • 1...Kd5
        • 2.Qe4#
      • 1...dxe1Q
        • 2.Sa7#
        • 2.Se7#
        • 2.Qg6#
        • 2.Qb5#
        • 2.Qb7#
      • 1...dxe1R
        • 2.Sa7#
        • 2.Se7#
        • 2.Qg6#
        • 2.Qb5#
        • 2.Qb7#
      • 1...Sb4!
  • Keys
    • 1.Qc1!
      • 1...Kd5
        • 2.Se7#
      • 1...dxc1Q
        • 2.Bf3#
      • 1...dxc1S
        • 2.Bf3#
      • 1...dxc1B
        • 2.Bf3#
      • 1...dxc1R
        • 2.Bf3#
      • 1...dxe1Q
        • 2.Qh6#
      • 1...dxe1S
        • 2.Qh6#
      • 1...dxe1B
        • 2.Bf3#
        • 2.Qh6#
      • 1...dxe1R
        • 2.Qh6#
      • 1...Sb4
        • 2.Qxc5#
      • 1...Sd7
        • 2.Bf3#
      • 1...c4
        • 2.Se7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 1
  • Sets
    • S(f);SBLOCK::B(G)
    • P(a);XR(C)::B(G)
    • P(b);::S(J)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);XR(C)::QAB1(A)
        • S(c);N_GUARD::QAR1(A),XP(b)
      • Refutation
        • P(b);XQ(A)
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • K(d);P_SPINP(a),S_FLIGHT::QAB1(A)
      • Refutation
        • S(c);
  • Actual
    • Q(A);P_PINP(b)
    • Vars
      • K(d);N_SPINP(b),P_SPINP(a),S_FLIGHT::S(J)
      • P(a);N_SPINP(b),XQ(A)::B(G)
      • P(a);OGATE,XR(C)::QAR(A)
      • S(c);N_GUARD::QAR1(A),XP(b)
      • S(f);SBLOCK::B(G)
      • P(b);::S(J)
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