MESON Chess Problem Database

Problem Display
PID: 231817 (8/3NK2p/1B1P3P/1n6/3rkN2/1P1R3B/5R2/8 w - - 0 1)

Bolus, Andrew

Pen & Pencil, 1889

(First published on Sat Aug 10 1889)

8/3NK2p/1B1P3P/1n6/3rkN2/1P1R3B/5R2/8

#2

10 + 4

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ra4
      • 2.Re3#
    • 1...Rb4
      • 2.Re3#
    • 1...Rc4
      • 2.Re3#
    • 1...Rd5
      • 2.Re3#
    • 1...Rxd6
      • 2.Re3#
  • Tries
    • 1.Kf6?
      • threat
        • 2.Sc5#
        • 2.Bg2#
        • 2.Bf5#
      • 1...Rxd3
        • 2.Bf5#
      • 1...Sxd6
        • 2.Sc5#
        • 2.Bg2#
      • 1...Rc4
        • 2.Bg2#
        • 2.Bf5#
        • 2.Re3#
      • 1...Rd5
        • 2.Bg2#
        • 2.Re3#
      • 1...Rxd6+!
  • Keys
    • 1.Sd5!
      • 1...Kxd3
        • 2.Sc5#
      • 1...Kxd5
        • 2.Bg2#
      • 1...Rxd3
        • 2.S5f6#
      • 1...Rxd5
        • 2.Re3#
      • 1...Sxd6
        • 2.Rxd4#
      • 1...Ra4
        • 2.Bf5#
      • 1...Rb4
        • 2.Bf5#
      • 1...Rc4
        • 2.Bf5#
      • 1...Sa3
        • 2.Rxd4#
      • 1...Sc3
        • 2.Rxd4#
      • 1...Sa7
        • 2.Rxd4#
      • 1...Sc7
        • 2.Rxd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 3
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • R(a);::R1(C)
    • R(a);XP(G)::R1(C)
  • Tries
    • Try
      • K(J);S_FLIGHT
      • Threat
        • DUALS(3)
      • Vars
        • R(a);XR(C)::B(D)
      • Refutation
        • R(a);CHECK,XP(G)
  • Actual
    • S(E);
    • Vars
      • K(b);S_FLIGHT,XR(C)::S(I)
      • K(b);P_SPINR(a),S_FLIGHT,XS(E)::B(D)
      • R(a);SBLOCK,XR(C)::S(E)
      • R(a);SBLOCK,XS(E)::R1(C)
      • S(c);N_GUARD,XP(G)::R1(C),XR(a)
      • R(a);::B(D)
      • S(c);N_GUARD::R1(C),XR(a)
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