MESON Chess Problem Database

Problem Display
PID: 110626 (6Q1/6p1/3p2k1/2pP4/2K3NP/6PB/8/8 w - - 0 1)

Gruber, Bratoljub

1st Comm., Partizan TT, 1958

6Q1/6p1/3p2k1/2pP4/2K3NP/6PB/8/8

#2

7 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Qe6#
    • 1...Kh5
      • 2.Qh7#
  • Tries
    • 1.Kb3?
      • 1...Kf5
        • 2.Qe6#
      • 1...Kh5
        • 2.Qh7#
      • 1...c4+!
    • 1.Kc3?
      • 1...Kf5
        • 2.Qe6#
      • 1...Kh5
        • 2.Qh7#
      • 1...c4!
    • 1.Kd3?
      • 1...Kf5
        • 2.Qe6#
        • 2.Qf7#
      • 1...Kh5
        • 2.Qh7#
      • 1...c4+!
    • 1.Kb5?
      • 1...Kf5
        • 2.Qe6#
      • 1...Kh5
        • 2.Qh7#
      • 1...c4!
    • 1.Sf2?
      • 1...Kh5
        • 2.Qh7#
      • 1...Kf6
        • 2.Qe6#
      • 1...Kh6!
    • 1.Sh2?
      • 1...Kh5
        • 2.Qh7#
      • 1...Kf6
        • 2.Qe6#
      • 1...Kh6!
    • 1.Se3?
      • 1...Kh5
        • 2.Qh7#
      • 1...Kf6
        • 2.Qe6#
      • 1...Kh6!
    • 1.Se5+?
      • 1...Kh5
        • 2.Qh7#
        • 2.Qh8#
      • 1...Kf6
        • 2.Qe6#
      • 1...Kh6
        • 2.Qh8#
      • 1...dxe5!
    • 1.Bf1?
      • 1...Kf5
        • 2.Qe6#
      • 1...Kh5!
    • 1.Bg2?
      • 1...Kf5
        • 2.Qe6#
      • 1...Kh5!
    • 1.Qxg7+?
      • 1...Kf5
        • 2.Sf2#
        • 2.Qh7#
      • 1...Kh5
        • 2.Sf6#
        • 2.Qh6#
        • 2.Qg5#
        • 2.Qf7#
        • 2.Qh7#
      • 1...Kxg7!
    • 1.Qe8+?
      • 1...Kf5
        • 2.Qe6#
      • 1...Kh7!
  • Keys
    • 1.Sf6!
      • 1...Kxf6
        • 2.Qe6#
      • 1...Kh6
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • K(c);N_SPINP(d),S_FLIGHT::QAB1(G)
    • K(c);N_SPINP(d),S_FLIGHT::QAR2(G)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Vars
        • K(c);N_SPINP(d),S_FLIGHT::QAB1(G)
        • K(c);N_SPINP(d),S_FLIGHT::QAR2(G)
      • Refutation
        • P(a);CHECK
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(c);N_SPINP(d),S_FLIGHT::QAB1(G)
        • K(c);N_SPINP(d),S_FLIGHT::QAR2(G)
      • Refutation
        • P(a);
    • Try
      • K(C);S_FLIGHT
      • Vars
        • K(c);N_SPINP(d),S_FLIGHT::QAR2(G)
      • Refutation
        • P(a);CHECK
    • Try
      • K(C);S_FLIGHT
      • Vars
        • K(c);N_SPINP(d),S_FLIGHT::QAB1(G)
        • K(c);N_SPINP(d),S_FLIGHT::QAR2(G)
      • Refutation
        • P(a);
    • Try
      • S(D);
      • Vars
        • K(c);N_SPINP(d),S_FLIGHT::QAR2(G)
        • K(c);N_SPINP(d),P-FLIGHT::QAR1(G)
      • Refutation
        • K(c);N_SPINP(d),P-FLIGHT
    • Try
      • S(D);
      • Vars
        • K(c);N_SPINP(d),S_FLIGHT::QAR2(G)
        • K(c);N_SPINP(d),P-FLIGHT::QAR1(G)
      • Refutation
        • K(c);N_SPINP(d),P-FLIGHT
    • Try
      • S(D);
      • Vars
        • K(c);N_SPINP(d),S_FLIGHT::QAR2(G)
        • K(c);N_SPINP(d),P-FLIGHT::QAR1(G)
      • Refutation
        • K(c);N_SPINP(d),P-FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(c);N_SPINP(d),P-FLIGHT::QAR1(G)
        • K(c);N_SPINP(d),P-FLIGHT::QAR2(G)
      • Refutation
        • P(b);XS(D)
    • Try
      • B(B);
      • Vars
        • K(c);N_SPINP(d),S_FLIGHT::QAB1(G)
      • Refutation
        • K(c);N_SPINP(d),S_FLIGHT
    • Try
      • B(B);
      • Vars
        • K(c);N_SPINP(d),S_FLIGHT::QAB1(G)
      • Refutation
        • K(c);N_SPINP(d),S_FLIGHT
    • Try
      • Q(G);CHECK,XP(d)
      • Refutation
        • K(c);P-FLIGHT,XQ(G)
    • Try
      • Q(G);CHECK,N_PINP(d)
      • Vars
        • K(c);S_FLIGHT::QAB1(G)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • S(D);
    • Vars
      • K(c);N_SPINP(d),OGATEB,P-FLIGHT,XS(D)::QAR1(G)
      • K(c);N_SPINP(d),P-FLIGHT::QAR1(G)
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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).