MESON Chess Problem Database

Problem Display
PID: 274611 (b1B5/3Q4/5b2/4P3/n2Bk2r/5pPp/2p1rP1K/2N1R3 w - - 0 1)

Gevers, Raymond

Die Schwalbe, 1933

b1B5/3Q4/5b2/4P3/n2Bk2r/5pPp/2p1rP1K/2N1R3

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.Rxe3#
    • 1...Bb7
      • 2.Bxb7#
  • Tries
    • 1.Bc3?
      • threat
        • 2.Qd3#
        • 2.Qd4#
      • 1...Bxe5
        • 2.Qd3#
      • 1...Bd5
        • 2.Qf5#
      • 1...Sb2
        • 2.Qd4#
      • 1...Sc5
        • 2.Qd4#
      • 1...Sxc3!
    • 1.Bc5?
      • threat
        • 2.Qd4#
      • 1...Kxe5
        • 2.Qf5#
        • 2.Qe6#
      • 1...Bxe5
        • 2.Qd3#
      • 1...Bd5
        • 2.Qf5#
      • 1...Sxc5!
  • Keys
    • 1.Be3!
      • threat
        • 2.Qd4#
      • 1...Rxf2+
        • 2.Bxf2#
      • 1...Kxe5
        • 2.Qe6#
      • 1...Rxe3
        • 2.Rxe3#
      • 1...Bxe5
        • 2.Qd3#
      • 1...Rd2
        • 2.Bxd2#
      • 1...Bd5
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • R(b);N_PINP(C),OGATE::R1(B),XR(b)
    • B(i);N_GUARD::B(I),XB(i)
  • Tries
    • Try
      • B(F);
      • Threat
        • DUALS(2)
      • Vars
        • B(h);XP(G)::QAB1(H)
        • B(i);SBLOCK::QAB1(H)
        • S(e);::QAR1(H)
      • Refutation
        • S(e);XB(F)
    • Try
      • B(F);
      • Threat
        • QAR1(H)
      • Vars
        • B(h);SBLOCK,XP(G)::QAB1(H)
        • B(i);SBLOCK::QAB1(H)
      • Refutation
        • S(e);XB(F)
  • Actual
    • B(F);N_PINR(b)
    • Threat
      • QAR1(H)
    • Vars
      • R(b);CHECK,OGATE,XP(C)::R(B)+B(F),XR(b)
      • K(f);OGATEB,P-FLIGHT,XP(G)::QAR1(H)
      • R(b);N_PINP(C),OGATE,P_SPINR(b),XB(F)::R1(B),XR(b)
      • B(h);SBLOCK,XP(G)::QAB1(H)
      • R(b);OGATEB::R(B)+B(F),XR(b)
      • B(i);SBLOCK::QAB1(H)
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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).