MESON Chess Problem Database

Problem Display
PID: 91 (1K2b3/8/k6r/P7/8/8/Q7/1R6 w - - 0 1)

Kashcheev, Niktopolion Pavlovich

Schach, 1930

1K2b3/8/k6r/P7/8/8/Q7/1R6

#2

4 + 3

3296 Shakhmatny zadachi miniaturi 1987
3813 300 Sachmatu Uzdaviniu 1991

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.Rb6#
    • 1...Rh2
      • 2.Rb6#
    • 1...Rh3
      • 2.Rb6#
    • 1...Rh4
      • 2.Rb6#
    • 1...Rh5
      • 2.Rb6#
    • 1...Rb6+
      • 2.Rxb6#
    • 1...Rh7
      • 2.Rb6#
    • 1...Rh8
      • 2.Rb6#
    • 1...Bc6
      • 2.Rb6#
    • 1...Bg6
      • 2.Rb6#
  • Tries
    • 1.Qc4+?
      • 1...Bb5
        • 2.Qxb5#
      • 1...Kxa5!
    • 1.Qe2+?
      • 1...Bb5
        • 2.Qxb5#
      • 1...Kxa5!
    • 1.Qf2?
      • threat
        • 2.Qa7#
      • 1...Rb6+
        • 2.Qxb6#
      • 1...Rh7
        • 2.Qb6#
      • 1...Kxa5!
  • Keys
    • 1.Qd5!
      • threat
        • 2.Qa8#
      • 1...Rb6+
        • 2.Rxb6#
      • 1...Rc6
        • 2.Qb5#
      • 1...Rh7
        • 2.Rb6#
      • 1...Bc6
        • 2.Rb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • R(b);N_GUARD::R1(A)
    • R(b);N_GUARD,SBLOCK::R1(A)
    • R(b);CHECK,N_GUARD::R1(A),XR(b)
    • B(c);S_CUTR(b)::R1(A)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::QAB1(B),XB(c)
      • Refutation
        • K(a);P-FLIGHT,XP(C)
    • Try
      • Q(B);CHECK
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::QAB1(B),XB(c)
      • Refutation
        • K(a);P-FLIGHT,XP(C)
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • R(b);CHECK,N_GUARD::QAR1(B),XR(b)
        • R(b);N_GUARD::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT,XP(C)
  • Actual
    • Q(B);
    • Threat
      • QAR2(B)
    • Vars
      • R(b);CHECK,N_GUARD::R1(A),XR(b)
      • R(b);S_CUTB(c)::QAB1(B)
      • R(b);N_GUARD::R1(A)
      • B(c);S_CUTR(b)::R1(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).