MESON Chess Problem Database

Problem Display
PID: 141798 (3nK3/4Q3/1pR5/3kN3/r2p4/8/4B3/4n3 w - - 0 1)

Lancia, E

La Settimana Enigmistica, 1932

(First published on Sat Oct 29 1932)

3nK3/4Q3/1pR5/3kN3/r2p4/8/4B3/4n3

#2

5 + 6

14868 Pirnie Collection 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Sc2
      • 2.Bf3#
    • 1...Sg2
      • 2.Bf3#
    • 1...Sd3
      • 2.Bf3#
    • 1...Sf3
      • 2.Bxf3#
  • Tries
    • 1.Rd6+?
      • 1...Kc5
        • 2.Rd7#
        • 2.Rxd8#
      • 1...Ke4!
  • Keys
    • 1.Sd3!
      • 1...Kxc6
        • 2.Qd7#
      • 1...Sxd3
        • 2.Bf3#
      • 1...Sxc6
        • 2.Sf4#
      • 1...Se6
        • 2.Qxe6#
      • 1...Ra1
        • 2.Sb4#
      • 1...Ra2
        • 2.Sb4#
      • 1...Ra3
        • 2.Sb4#
      • 1...Rb4
        • 2.Sxb4#
      • 1...Rc4
        • 2.Rd6#
      • 1...Ra5
        • 2.Sb4#
      • 1...Ra6
        • 2.Sb4#
      • 1...Ra7
        • 2.Sb4#
      • 1...Ra8
        • 2.Sb4#
      • 1...Sc2
        • 2.Bf3#
      • 1...Sg2
        • 2.Bf3#
      • 1...Sf3
        • 2.Bxf3#
      • 1...Sb7
        • 2.Qe6#
      • 1...Sf7
        • 2.Qe6#
      • 1...b5
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 15
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::B(A)
    • S(a);N_GUARD::B(A),XS(a)
  • Tries
    • Try
      • R(C);CHECK
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • S(B);
    • Vars
      • K(d);S_FLIGHT,XR(C)::QAB1(D)
      • S(a);N_GUARD,XS(B)::B(A)
      • S(f);SBLOCK,XR(C)::S(B)
      • S(f);N_GUARD::QAB1(D),XS(f)
      • R(b);N_GUARD::S(B)
      • R(b);N_GUARD::S(B),XR(b)
      • R(b);SBLOCK::R1(C)
      • S(a);N_GUARD::B(A)
      • S(a);N_GUARD::B(A),XS(a)
      • S(f);N_GUARD::QAB1(D)
      • P(e);N_GUARD::R1(C)
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