MESON Chess Problem Database

Problem Display
PID: 96739 (B1QR4/2p5/2qbP1K1/6pN/b1p1k1NR/2P3p1/2pPp1P1/r1B5 w - - 0 1)

Szeghy, Jan

The Chess Problem, 1947

B1QR4/2p5/2qbP1K1/6pN/b1p1k1NR/2P3p1/2pPp1P1/r1B5

#2

12 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Se5#
    • 1...Ba3
      • 2.Rd4#
    • 1...Bb4
      • 2.Rd4#
    • 1...Bf4
      • 2.Shf6#
      • 2.Rd4#
    • 1...Be5
      • 2.Sf2#
      • 2.Sgf6#
    • 1...Be7
      • 2.Rd4#
    • 1...Bf8
      • 2.Rd4#
  • Tries
    • 1.Sgf6+?
      • 1...Kd3
        • 2.Rd4#
      • 1...Ke5!
    • 1.Shf6+?
      • 1...Kd3
        • 2.Se5#
      • 1...Kf4!
    • 1.Bxc6+?
      • 1...Kd3
        • 2.Se5#
      • 1...Bxc6!
  • Keys
    • 1.e7!
      • threat
        • 2.Qf5#
      • 1...Ba3+
        • 2.Qe6#
      • 1...Bb4+
        • 2.Qe6#
      • 1...Bf4+
        • 2.Shf6#
      • 1...Bc5+
        • 2.Qe6#
      • 1...Be5+
        • 2.Sgf6#
      • 1...Bxe7+
        • 2.Qe6#
      • 1...Kd3
        • 2.Se5#
      • 1...Kd5
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • K(g);N_SPINQ(i),P_SPINB(j),S_FLIGHT::S(E)
    • B(j);OGATE,P_PINP(H)::R1(L)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(g);N_SPINQ(i),OGATE,P_SPINB(j),S_FLIGHT::R1(F)
      • Refutation
        • K(g);N_SPINQ(i),P-FLIGHT
    • Try
      • S(G);CHECK
      • Vars
        • K(g);N_SPINQ(i),P_SPINB(j),S_FLIGHT::S(E)
      • Refutation
        • K(g);N_SPINQ(i),P-FLIGHT
    • Try
      • B(J);CHECK,XQ(i)
      • Vars
        • K(g);P_SPINB(j),S_FLIGHT::S(E)
      • Refutation
        • B(e);XB(J)
  • Actual
    • P(H);
    • Threat
      • QAB1(K)
    • Vars
      • B(j);CHECK,N_GUARD::QAR2(K)
      • B(j);CHECK,SBLOCK::S(G)
      • B(j);CHECK,SBLOCK::R(F)+S(E),DCHECK
      • B(j);CHECK,N_GUARD,XP(H)::QAR2(K)
      • K(g);N_SPINQ(i),P_SPINB(j),S_FLIGHT::S(E)
      • K(g);P_SPINB(j),S_FLIGHT::QAR2(K)
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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).