MESON Chess Problem Database

Problem Display
PID: 228948 (1B1rN3/1qr5/5N2/1ppPkPR1/3np3/1pQ1P1P1/1P2b3/2K5 w - - 0 1)

Isaev, Leonid Antonovich

Tijdschrift vd NSB, 1926

1B1rN3/1qr5/5N2/1ppPkPR1/3np3/1pQ1P1P1/1P2b3/2K5

#2

11 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...c4
      • 2.Qxd4#
      • 2.exd4#
  • Tries
    • 1.Sd7+?
      • 1...Rxd7
        • 2.f6#
      • 1...Kxd5!
    • 1.Bxc7+?
      • 1...Rd6
        • 2.Bxd6#
      • 1...Qxc7!
  • Keys
    • 1.Qxc5!
      • threat
        • 2.exd4#
      • 1...Rxe8
        • 2.Sd7#
      • 1...Sxf5
        • 2.Qc3#
      • 1...Sc2
        • 2.Qe7#
      • 1...Sf3
        • 2.Sg4#
      • 1...Sc6
        • 2.d6#
      • 1...Se6
        • 2.fxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(I);CHECK
      • Vars
        • R(j);XS(I)::R(H)+P(G)
      • Refutation
        • K(g);N_SPINR(i),N_SPINS(c),P-FLIGHT,XP(F)
    • Try
      • B(J);CHECK,XR(i)
      • Vars
        • R(j);N_GUARD,P_SPINR(j)::B(J),XR(j)
      • Refutation
        • Q(h);XB(J)
  • Actual
    • Q(C);N_PINS(c),P_SPINQ(C),XP(f)
    • Threat
      • P(D),XS(c)
    • Vars
      • R(j);N_GUARD,XS(K)::S(I)
      • S(c);P_SPINS(c),XP(G)::QAB(C)
      • S(c);N_PINQ(C)::QAR2(C)
      • S(c);S_CUTB(a)::S(I)
      • S(c);N_PINQ(C),S_CUTQ(h)::QAR(C)+P(F)
      • S(c);OGATE::R(H)+P(G),XS(c)
HTML5 logo

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).