MESON Chess Problem Database

Problem Display
PID: 177883 (8/8/2p1Q3/1pK1pp2/1P1ppp2/3Nkb1R/4p2N/4B3 w - - 0 1)

Pavlov, Mikhail Aleksandrovich

Sahs (Latvia), 1982

8/8/2p1Q3/1pK1pp2/1P1ppp2/3Nkb1R/4p2N/4B3

#2

7 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd3
      • 2.Qb3#
    • 1...exd3
      • 2.Qxe5#
  • Tries
    • 1.Kb6?
      • 1...Kxd3
        • 2.Qb3#
      • 1...exd3
        • 2.Qxe5#
      • 1...c5!
    • 1.Kxc6?
      • 1...Kxd3
        • 2.Qb3#
      • 1...exd3+!
    • 1.Kd6?
      • 1...Kxd3
        • 2.Qb3#
      • 1...exd3
        • 2.Qxe5#
      • 1...c5!
    • 1.Sxf3?
      • 1...Kxd3
        • 2.Qb3#
      • 1...exd3
        • 2.Qxe5#
      • 1...exf3!
    • 1.Sg4+?
      • 1...Kxd3
        • 2.Qb3#
      • 1...fxg4!
    • 1.Rg3?
      • 1...Kxd3
        • 2.Qb3#
      • 1...exd3
        • 2.Qxe5#
      • 1...fxg3!
    • 1.Qa2?
      • threat
        • 2.Qd2#
      • 1...Kxd3
        • 2.Qb3#
        • 2.Qd2#
      • 1...exd3!
    • 1.Qd5?
      • 1...Kxd3
        • 2.Qb3#
      • 1...exd3
        • 2.Rxf3#
        • 2.Qxf3#
        • 2.Qxe5#
      • 1...cxd5!
    • 1.Qxf5?
      • 1...exd3
        • 2.Sg4#
        • 2.Rxf3#
        • 2.Qxe5#
      • 1...Kxd3!
    • 1.Qf7?
      • 1...Kxd3
        • 2.Qb3#
      • 1...exd3!
    • 1.Qg8?
      • 1...Kxd3
        • 2.Qb3#
      • 1...exd3!
    • 1.Qxc6?
      • 1...exd3
        • 2.Rxf3#
        • 2.Qxf3#
      • 1...Kxd3!
    • 1.Qd6?
      • 1...exd3
        • 2.Qxe5#
      • 1...Kxd3!
    • 1.Qf6?
      • 1...exd3
        • 2.Qxe5#
      • 1...Kxd3!
    • 1.Qe7?
      • 1...exd3
        • 2.Qxe5#
      • 1...Kxd3!
    • 1.Qe8?
      • 1...exd3
        • 2.Qxe5#
      • 1...Kxd3!
  • Keys
    • 1.Sxf4!
      • 1...Kxf4
        • 2.Qh6#
      • 1...exf4
        • 2.Rxf3#
      • 1...d3
        • 2.Sg2#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • K(b);OGATEB,P-FLIGHT,XS(C)::QAR2(G)
    • P(e);OGATEB,P_SPINP(h),SBLOCK,XS(C)::QAR2(G),XP(h)
  • Tries
    • Try
      • K(F);S_FLIGHT
      • Vars
        • K(b);OGATEB,P-FLIGHT,XS(C)::QAR2(G)
        • P(e);OGATEB,P_SPINP(h),SBLOCK,XS(C)::QAR2(G),XP(h)
      • Refutation
        • P(j);
    • Try
      • K(F);P-FLIGHT,XP(j)
      • Vars
        • K(b);OGATEB,P-FLIGHT,XS(C)::QAR2(G)
      • Refutation
        • P(e);CHECK,P_SPINP(h),XS(C)
    • Try
      • K(F);S_FLIGHT
      • Vars
        • K(b);OGATEB,P-FLIGHT,XS(C)::QAR2(G)
        • P(e);OGATEB,P_SPINP(h),SBLOCK,XS(C)::QAR2(G),XP(h)
      • Refutation
        • P(j);
    • Try
      • S(B);XB(c)
      • Vars
        • K(b);OGATEB,P-FLIGHT,XS(C)::QAR2(G)
        • P(e);OGATEB,P_SPINP(h),SBLOCK,XS(C)::QAR2(G),XP(h)
      • Refutation
        • P(e);P_SPINP(e),XS(B)
    • Try
      • S(B);CHECK
      • Vars
        • K(b);P-FLIGHT,XS(C)::QAR2(G)
      • Refutation
        • P(i);XS(B)
    • Try
      • R(D);
      • Vars
        • K(b);OGATEB,P-FLIGHT,XS(C)::QAR2(G)
        • P(e);OGATEB,P_SPINP(h),SBLOCK,XS(C)::QAR2(G),XP(h)
      • Refutation
        • P(f);N_SPINB(c),XR(D)
    • Try
      • Q(G);
      • Threat
        • QAB1(G)
      • Refutation
        • P(e);XS(C)
    • Try
      • Q(G);
      • Vars
        • K(b);OGATEB,P-FLIGHT,P_SPINP(d),XS(C)::QAR2(G)
      • Refutation
        • P(j);XQ(G)
    • Try
      • Q(G);XP(i)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(e),XS(C)
    • Try
      • Q(G);
      • Vars
        • K(b);OGATEB,P-FLIGHT,XS(C)::QAR2(G)
      • Refutation
        • P(e);XS(C)
    • Try
      • Q(G);
      • Vars
        • K(b);OGATEB,P-FLIGHT,XS(C)::QAR2(G)
      • Refutation
        • P(e);XS(C)
    • Try
      • Q(G);XP(j)
      • Refutation
        • K(b);P-FLIGHT,XS(C)
    • Try
      • Q(G);
      • Vars
        • P(e);OGATEB,SBLOCK,XS(C)::QAR2(G),XP(h)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(d),XS(C)
    • Try
      • Q(G);
      • Vars
        • P(e);OGATEB,SBLOCK,XS(C)::QAR2(G),XP(h)
      • Refutation
        • K(b);P-FLIGHT,XS(C)
    • Try
      • Q(G);
      • Vars
        • P(e);OGATEB,P_SPINP(h),SBLOCK,XS(C)::QAR2(G),XP(h)
      • Refutation
        • K(b);P-FLIGHT,XS(C)
    • Try
      • Q(G);
      • Vars
        • P(e);OGATEB,P_SPINP(h),SBLOCK,XS(C)::QAR2(G),XP(h)
      • Refutation
        • K(b);P-FLIGHT,XS(C)
  • Actual
    • S(C);XP(f)
    • Vars
      • K(b);N_SPINB(c),OGATEB,S_FLIGHT,XS(C)::QAB(G)
      • P(h);P_SPINP(e),XS(C)::R1(D),XB(c)
      • P(d);SBLOCK::S(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).