MESON Chess Problem Database

Problem Display
PID: 189755 (K7/3Q4/6R1/2p1b2p/2n1k2P/n3P2P/B2P4/6Nb w - - 0 1)

Wesin, Miklos

La Strategie, 1912

K7/3Q4/6R1/2p1b2p/2n1k2P/n3P2P/B2P4/6Nb

#2

9 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sb1
      • 2.Bxb1#
    • 1...Sb5
      • 2.Bb1#
  • Tries
    • 1.Bb1+?
      • 1...Sc2
        • 2.Bxc2#
      • 1...Sxb1!
    • 1.Qc6+?
      • 1...Kf5
        • 2.Rg5#
      • 1...Kd3!
  • Keys
    • 1.Qh7!
      • threat
        • 2.Rd6#
      • 1...Kd3+
        • 2.Rg2#
      • 1...Kf5+
        • 2.Rc6#
      • 1...Sb6+
        • 2.Rxb6#
      • 1...Kd5
        • 2.Qb7#
      • 1...Sxd2
        • 2.Rg3#
      • 1...Sxe3
        • 2.Rg4#
      • 1...Ba1
        • 2.Rg5#
      • 1...Bb2
        • 2.Rg5#
      • 1...Bh2
        • 2.Rg5#
      • 1...Bc3
        • 2.Rg5#
      • 1...Bg3
        • 2.Rg5#
      • 1...Bd4
        • 2.Rg5#
      • 1...Bf4
        • 2.Rg5#
      • 1...Bd6
        • 2.Rg5#
      • 1...Bf6
        • 2.Rg5#
      • 1...Bc7
        • 2.Rg5#
      • 1...Bg7
        • 2.Rg5#
      • 1...Bb8
        • 2.Rg5#
      • 1...Bh8
        • 2.Rg5#
      • 1...Sd6
        • 2.Rg4#
        • 2.Rxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 19
    • REMOVED MATES = 2
  • Sets
    • S(b);N_GUARD::B(B),XS(b)
    • S(b);N_GUARD::B(B)
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::B(B),XS(b)
      • Refutation
        • S(b);XB(B)
    • Try
      • Q(H);CHECK
      • Vars
        • K(d);P_PINQ(H),S_FLIGHT::R1(G)
      • Refutation
        • K(d);P_PINQ(H),S_FLIGHT
  • Actual
    • Q(H);
    • Threat
      • QAB(H)+R(G)
    • Vars
      • K(d);CHECK,S_FLIGHT::QAB(H)+R(G)
      • S(c);CHECK::QAB(H)+R(G),XS(c)
      • K(d);P_SPINS(c),S_FLIGHT::QAB(H)
      • S(c);XP(C)::QAB(H)+R(G)
      • S(c);XP(D)::QAB(H)+R(G),DCHECK
      • B(f);::QAB(H)+R(G)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).