MESON Chess Problem Database

Problem Display
PID: 202620 (RN1k4/r3Nn2/b1B2Q2/2K5/8/8/8/8 w - - 0 1)

Telkes, Imre

Magyar Sakkvilag, 1923

RN1k4/r3Nn2/b1B2Q2/2K5/8/8/8/8

#2

6 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rd7
      • 2.Sxa6#
    • 1...Rxe7
      • 2.Sxa6#
  • Tries
    • 1.Sd5+?
      • 1...Re7
        • 2.Sxa6#
      • 1...Kc8!
    • 1.Sd7+?
      • 1...Kc7
        • 2.Sd5#
      • 1...Bc8
        • 2.Rxc8#
      • 1...Rxa8!
    • 1.Qd6+?
      • 1...Rd7
        • 2.Sxa6#
        • 2.Qxd7#
      • 1...Sxd6!
  • Keys
    • 1.Bd7!
      • threat
        • 2.Sd5#
      • 1...Rc7+
        • 2.Sec6#
      • 1...Kc7
        • 2.Qb6#
      • 1...Rxd7
        • 2.Sxa6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(b);N_GUARD::R(E)+S(F),XB(a)
    • R(b);N_GUARD,P_SPINR(b),XS(D)::R(E)+S(F),XB(a)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • R(b);P_SPINR(b)::R(E)+S(F),XB(a)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(d);S_FLIGHT::S(D)
        • B(a);N_GUARD,P_SPINB(a)::R1(E),XB(a)
      • Refutation
        • R(b);XR(E)
    • Try
      • Q(C);CHECK
      • Refutation
        • S(c);XQ(C)
  • Actual
    • B(B);
    • Threat
      • QAB(C)+S(D)
    • Vars
      • R(b);CHECK,SBLOCK::QAB(C)+S(D),DCHECK
      • K(d);S_FLIGHT::QAB1(C)
      • R(b);N_GUARD,SBLOCK,XB(B)::R(E)+S(F),XB(a)
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).