MESON Chess Problem Database

Problem Display
PID: 144181 (r3R3/1B3P2/2NB4/1P2N3/R5P1/1pp1k2P/4n3/4K3 w - - 0 1)

Paavilainen, Jorma

Tanner, Henry

Turner, Neal

British Chess Magazine, 1994

r3R3/1B3P2/2NB4/1P2N3/R5P1/1pp1k2P/4n3/4K3

#2

11 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Bc5#
    • 1...Sg1
      • 2.Bc5#
    • 1...Sg3
      • 2.Bc5#
    • 1...Sf4
      • 2.Bc5#
  • Tries
    • 1.Sc4+?
      • 1...Kf3
        • 2.Sb4#
        • 2.Sd4#
        • 2.S6a5#
        • 2.Sa7#
        • 2.Se7#
        • 2.Sb8#
        • 2.Sd8#
      • 1...Kd3!
    • 1.Sa5?
      • threat
        • 2.Re4#
      • 1...Sg3
        • 2.Bc5#
      • 1...Sd4!
    • 1.Sa7?
      • threat
        • 2.Re4#
      • 1...Sg3
        • 2.Bc5#
      • 1...Sd4!
    • 1.f8Q?
      • threat
        • 2.Qf2#
        • 2.Qf3#
      • 1...Rxa4
        • 2.Qf3#
      • 1...Sg1
        • 2.Bc5#
        • 2.Qh6#
        • 2.Qf2#
        • 2.Qf4#
      • 1...Sf4
        • 2.Bc5#
        • 2.Qxf4#
      • 1...Sd4!
  • Keys
    • 1.Sb4!
      • threat
        • 2.Sd5#
      • 1...Kd4
        • 2.Sc2#
      • 1...Kf4
        • 2.Sf3#
      • 1...Rxa4
        • 2.Sf3#
      • 1...Sd4
        • 2.Sc4#
      • 1...Sf4
        • 2.Bc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • S(a);N_GUARD::B(H)
  • Tries
    • Try
      • S(F);CHECK
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • S(G);
      • Threat
        • R1(C)
      • Vars
        • S(a);N_GUARD::B(H)
      • Refutation
        • S(a);
    • Try
      • S(G);
      • Threat
        • R1(C)
      • Vars
        • S(a);N_GUARD::B(H)
      • Refutation
        • S(a);
    • Try
      • P(J);
      • Threat
        • DUALS(2)
      • Vars
        • R(e);XR(C)::QAR1(J)
      • Refutation
        • S(a);
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • K(d);S_FLIGHT::R(C)+S(G),DCHECK
      • K(d);S_FLIGHT::B(H)+S(F)
      • R(e);N_GUARD,XR(C)::R(K)+S(F)
      • S(a);SBLOCK::R(K)+S(F),DCHECK
      • S(a);N_GUARD,SBLOCK::B(H)
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