MESON Chess Problem Database

Problem Display
PID: 121360 (8/4K3/1p6/1Pkq1R2/3N4/2PP4/3B4/8 w - - 0 1)

Voda, Josef

Svobodne Slovo, 1951

8/4K3/1p6/1Pkq1R2/3N4/2PP4/3B4/8

#2

7 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qe5+
      • 2.Rxe5#
  • Tries
    • 1.Bc1?
      • threat
        • 2.Ba3#
      • 1...Qe5+
        • 2.Rxe5#
      • 1...Qxf5!
    • 1.Be1?
      • 1...Qe5+
        • 2.Rxe5#
      • 1...Qxf5!
    • 1.Be3?
      • 1...Qe5+
        • 2.Rxe5#
      • 1...Qxf5!
    • 1.Bf4?
      • threat
        • 2.Bd6#
      • 1...Qe5+
        • 2.Rxe5#
      • 1...Qxf5!
    • 1.Bg5?
      • 1...Qe5+
        • 2.Rxe5#
      • 1...Qxf5!
    • 1.Bh6?
      • 1...Qe5+
        • 2.Rxe5#
      • 1...Qxf5!
    • 1.Rg5?
      • 1...Qe5+
        • 2.Rxe5#
      • 1...Qf5
        • 2.Rxf5#
      • 1...Qxg5+!
    • 1.Rh5?
      • 1...Qe5+
        • 2.Rxe5#
      • 1...Qg5+
        • 2.Rxg5#
      • 1...Qf5
        • 2.Rxf5#
      • 1...Qxh5!
  • Keys
    • 1.c4!
      • threat
        • 2.Sb3#
        • 2.Se6#
        • 2.Rxd5#
      • 1...Qe5+
        • 2.Se6#
      • 1...Kxd4
        • 2.Rxd5#
      • 1...Qxf5
        • 2.Sb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(b);CHECK,OGATEB::R(F),XQ(b)
  • Tries
    • Try
      • B(A);
      • Threat
        • B(A)
      • Vars
        • Q(b);CHECK,OGATEB::R(F),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XR(F)
    • Try
      • B(A);
      • Vars
        • Q(b);CHECK,OGATEB::R(F),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XR(F)
    • Try
      • B(A);
      • Vars
        • Q(b);CHECK,OGATEB::R(F),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XR(F)
    • Try
      • B(A);
      • Threat
        • B(A)
      • Vars
        • Q(b);CHECK,OGATEB::R(F),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XR(F)
    • Try
      • B(A);
      • Vars
        • Q(b);CHECK,OGATEB::R(F),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XR(F)
    • Try
      • B(A);
      • Vars
        • Q(b);CHECK,OGATEB::R(F),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XR(F)
    • Try
      • R(F);
      • Vars
        • Q(b);CHECK,OGATEB::R(F),XQ(b)
        • Q(b);OGATEB::R(F),XQ(b)
      • Refutation
        • Q(b);CHECK,N_SPINQ(b),XR(F)
    • Try
      • R(F);
      • Vars
        • Q(b);CHECK,OGATEB::R(F),XQ(b)
        • Q(b);OGATEB::R(F),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XR(F)
  • Actual
    • P(B);
    • Threat
      • DUALS(3)
    • Vars
      • Q(b);CHECK::S(D)
      • K(a);N_SPINQ(b),S_FLIGHT,XS(D)::R1(F),XQ(b)
      • Q(b);N_SPINQ(b),XR(F)::S(D)
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).