MESON Chess Problem Database

Problem Display
PID: 152648 (8/1n2p3/3r4/1B6/N3k3/2PR2PQ/1N3pP1/5K2 w - - 0 1)

Anonymous

Pen & Pencil, 1888

(First published on Sat Nov 3 1888)

8/1n2p3/3r4/1B6/N3k3/2PR2PQ/1N3pP1/5K2

#2

9 + 5

15239 Valois Notebooks 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd3
      • 2.Qe6#
    • 1...Rd4
      • 2.Qe6#
    • 1...Re6
      • 2.Qxe6#
    • 1...Rd7
      • 2.Qe6#
    • 1...Rd8
      • 2.Qe6#
    • 1...e5
      • 2.Qg4#
  • Tries
    • 1.Rd4+?
      • 1...Ke3
        • 2.Sd1#
        • 2.Sc4#
        • 2.g4#
      • 1...Rxd4
        • 2.Qe6#
      • 1...Ke5!
  • Keys
    • 1.Sc4!
      • 1...Kxd3
        • 2.Qf5#
      • 1...Rxd3
        • 2.Qe6#
      • 1...Rd4
        • 2.Rxd4#
      • 1...Rd5
        • 2.Re3#
      • 1...Ra6
        • 2.Rd4#
      • 1...Rb6
        • 2.Rd4#
      • 1...Rc6
        • 2.Rd4#
      • 1...Re6
        • 2.Rd4#
      • 1...Rf6
        • 2.Rd4#
      • 1...Rg6
        • 2.Rd4#
      • 1...Rh6
        • 2.Rd4#
      • 1...Rd7
        • 2.Qh7#
      • 1...Rd8
        • 2.Qh7#
      • 1...Sa5
        • 2.Sc5#
      • 1...Sc5
        • 2.Sxc5#
      • 1...Sd8
        • 2.Sc5#
      • 1...e5
        • 2.Sd2#
      • 1...e6
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 5
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
    • R(c);N_GUARD,XR(E)::QAR2(G)
    • R(c);N_GUARD::QAR2(G)
    • R(c);N_GUARD::QAR2(G),XR(c)
    • P(e);SBLOCK::QAR2(G)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • R(c);XR(E)::QAR2(G)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(B);
    • Vars
      • K(b);S_FLIGHT,XR(E)::QAB(G)
      • R(c);N_GUARD,SBLOCK,XR(E)::QAR2(G)
      • R(c);N_GUARD::R1(E),XR(c)
      • R(c);SBLOCK::R1(E)
      • R(c);N_GUARD::R1(E)
      • R(c);N_GUARD::QAB(G)
      • S(d);N_GUARD::S(H)
      • S(d);N_GUARD::S(H),XS(d)
      • P(e);SBLOCK::S(B)
      • P(e);S_CUTR(c)::QAB(G)
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