MESON Chess Problem Database

Problem Display
PID: 179669 (4R3/2Q3pb/4PN2/rR1qbk1P/3P1p2/4pNpK/6B1/8 w - - 0 1)

Gorbatenko, Yuri Grigorevich

Kopnin, Aleksey Grigorevich

3/4 HM., Revista Romana de Sah, 1985-04

4R3/2Q3pb/4PN2/rR1qbk1P/3P1p2/4pNpK/6B1/8

#2

10 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf6
      • 2.Qf7#
    • 1...Qa2
      • 2.Qxe5#
    • 1...Qb3
      • 2.Qxe5#
    • 1...Qxf3
      • 2.Qxe5#
    • 1...Qc4
      • 2.Qxe5#
    • 1...Qc6
      • 2.Qxe5#
    • 1...Qb7
      • 2.Qxe5#
    • 1...Qa8
      • 2.Qxe5#
    • 1...Qd7
      • 2.Qxe5#
    • 1...Qd8
      • 2.Qxe5#
    • 1...Bxf6
      • 2.Qc2#
    • 1...gxf6
      • 2.Qxh7#
  • Tries
    • 1.Sh4+?
      • 1...Kxf6
        • 2.Qe7#
      • 1...Kg5!
    • 1.Sxd5?
      • threat
        • 2.Qxe5#
        • 2.Qc2#
      • 1...Ke4
        • 2.Qc2#
      • 1...Bxd4
        • 2.Qxf4#
        • 2.Qc2#
      • 1...Ra2
        • 2.Qxe5#
      • 1...Ra3
        • 2.Qxe5#
      • 1...Bd6
        • 2.Qc2#
      • 1...Bf6
        • 2.Qxf4#
        • 2.Qc2#
      • 1...Bxc7!
    • 1.Sxh7?
      • threat
        • 2.Sh4#
      • 1...Ke4
        • 2.Qc2#
      • 1...Qxf3
        • 2.Qxe5#
      • 1...Qd8
        • 2.Qxe5#
        • 2.Qc2#
      • 1...Bf6
        • 2.Qc2#
      • 1...g5!
    • 1.Rxd5?
      • threat
        • 2.Qxe5#
      • 1...Kxf6
        • 2.Qxe5#
        • 2.Qf7#
      • 1...gxf6
        • 2.Qc2#
        • 2.Qxh7#
      • 1...Rxd5!
    • 1.Qxg7?
      • threat
        • 2.Sh4#
        • 2.Qg5#
      • 1...Bxd4
        • 2.Qg5#
      • 1...Bxf6
        • 2.Qxh7#
      • 1...Bg6
        • 2.Qxg6#
      • 1...Qxf3!
  • Keys
    • 1.Se4!
      • threat
        • 2.Sh4#
      • 1...Kxe4
        • 2.Qc2#
      • 1...Qxe4
        • 2.Qf7#
      • 1...Qd8
        • 2.Qxe5#
      • 1...Bf6
        • 2.Sd6#
      • 1...g5
        • 2.Qxh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 10
  • Sets
    • K(g);OGATEB,P-FLIGHT,XS(H)::QAR1(I)
    • Q(e);N_GUARD,P_SPINB(f)::QAR1(I),XB(f)
    • Q(e);N_GUARD,P_SPINB(f),XS(B)::QAR1(I),XB(f)
    • B(f);P_SPINQ(e),SBLOCK,XS(H)::QAB(I)
    • P(h);OGATE,SBLOCK,XS(H)::QAB(I),XB(i)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(g);P-FLIGHT,XS(H)::QAB1(I)
      • Refutation
        • K(g);P-FLIGHT
    • Try
      • S(H);XQ(e)
      • Threat
        • DUALS(2)
      • Vars
        • K(g);S_FLIGHT::QAB(I)
        • R(d);::QAR1(I),XB(f)
        • B(f);::QAB(I)
      • Refutation
        • B(f);XQ(I)
    • Try
      • S(H);XB(i)
      • Threat
        • S(B)
      • Vars
        • K(g);S_FLIGHT::QAB(I)
        • Q(e);N_GUARD,P_SPINB(f),XS(B)::QAR1(I),XB(f)
        • B(f);P_SPINQ(e)::QAB(I)
      • Refutation
        • P(h);
    • Try
      • R(E);P_PINB(f),XQ(e)
      • Threat
        • QAR1(I),XB(f)
      • Refutation
        • R(d);N_SPINB(f),XR(E)
    • Try
      • Q(I);XP(h)
      • Threat
        • DUALS(2)
      • Vars
        • B(f);P_SPINQ(e),XP(D)::QAR1(I)
        • B(f);P_SPINQ(e),SBLOCK,XS(H)::QAB(I),XB(i)
        • B(i);N_GUARD::QAB1(I),XB(i)
      • Refutation
        • Q(e);P_SPINB(f),XS(B)
  • Actual
    • S(H);
    • Threat
      • S(B)
    • Vars
      • K(g);OGATEB,S_FLIGHT,XS(H)::QAB(I)
      • Q(e);P_SPINB(f),SBLOCK,XS(H)::QAR2(I)
      • Q(e);N_GUARD,P_SPINB(f)::QAR1(I),XB(f)
      • B(f);N_GUARD,P_SPINQ(e),SBLOCK::S(H)
      • P(h);OGATE::QAB(I),XB(i)
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).