MESON Chess Problem Database

Problem Display
PID: 108461 (1qn1BBN1/5Rp1/N1r3b1/2bkpP1p/p2p4/3P1K2/7Q/2R5 w - - 0 1)

Ibulaev, Georgy Ibulaevich

Uralski Skazi, 1990

1qn1BBN1/5Rp1/N1r3b1/2bkpP1p/p2p4/3P1K2/7Q/2R5

#2

10 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qd6
      • 2.Qa2#
    • 1...Qa7
      • 2.Qa2#
    • 1...Qc7
      • 2.Qa2#
    • 1...Qa8
      • 2.Qa2#
    • 1...Rxa6
      • 2.Rxc5#
    • 1...Rb6
      • 2.Rxc5#
    • 1...Rd6
      • 2.Rxc5#
    • 1...Re6
      • 2.Rxc5#
    • 1...Rf6
      • 2.Rxc5#
    • 1...Ba3
      • 2.Bxc6#
    • 1...Bb4
      • 2.Bxc6#
    • 1...Bb6
      • 2.Sb4#
      • 2.Bxc6#
    • 1...Bd6
      • 2.Bxc6#
    • 1...Ba7
      • 2.Bxc6#
    • 1...Sd6
      • 2.Se7#
    • 1...e4+
      • 2.dxe4#
  • Tries
    • 1.Sb4+?
      • 1...Bxb4
        • 2.Bxc6#
      • 1...Qxb4!
    • 1.Sc7+?
      • 1...Qxc7
        • 2.Qa2#
      • 1...Rxc7!
    • 1.Sf6+?
      • 1...Rxf6
        • 2.Rxc5#
      • 1...gxf6!
    • 1.Rd7+?
      • 1...Qd6
        • 2.Qa2#
      • 1...Rd6
        • 2.Rxc5#
      • 1...Sd6
        • 2.Se7#
      • 1...Bd6!
  • Keys
    • 1.Bd6!
      • threat
        • 2.Qxe5#
      • 1...e4+
        • 2.dxe4#
      • 1...Kxd6
        • 2.Rd7#
      • 1...Qxd6
        • 2.Qa2#
      • 1...Rxd6
        • 2.Rxc5#
      • 1...Bxd6
        • 2.Bxc6#
      • 1...Sxd6
        • 2.Se7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 10
  • Sets
    • Q(j);N_GUARD::QAB(B)
    • R(g);N_GUARD,XS(F)::R1(A),XB(c)
    • R(g);N_GUARD::R1(A),XB(c)
    • R(g);N_GUARD,P_PINP(E)::R1(A),XB(c)
    • B(c);::B(H),XR(g)
    • S(k);N_GUARD,SBLOCK,S_CUTB(c)::S(J)
    • P(e);CHECK,OGATE::P(C),XP(e)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • B(c);XS(F)::B(H),XR(g)
      • Refutation
        • Q(j);XS(F)
    • Try
      • S(F);CHECK
      • Vars
        • Q(j);XS(F)::QAB(B)
      • Refutation
        • R(g);XS(F)
    • Try
      • S(J);CHECK
      • Vars
        • R(g);P_PINP(E),XS(J)::R1(A),XB(c)
      • Refutation
        • P(i);XS(J)
    • Try
      • R(G);CHECK
      • Vars
        • Q(j);P_SPINQ(j)::QAB(B)
        • R(g);P_SPINR(g)::R1(A),XB(c)
        • S(k);P_SPINS(k)::S(J)
      • Refutation
        • B(c);P_SPINB(c)
  • Actual
    • B(I);
    • Threat
      • QAR1(B),XP(e)
    • Vars
      • P(e);CHECK,OGATE::P(C),XP(e)
      • K(d);OGATEB,P-FLIGHT,P_SPINP(e),XB(I)::R1(G)
      • Q(j);N_GUARD,SBLOCK,XB(I)::QAB(B)
      • R(g);N_GUARD,SBLOCK,XB(I)::R1(A),XB(c)
      • B(c);SBLOCK,XB(I)::B(H),XR(g)
      • S(k);N_GUARD,SBLOCK,XB(I)::S(J)
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).