MESON Chess Problem Database

Problem Display
PID: 84997 (B1N5/2Qp4/pp1p2p1/8/1BPkp1NR/6p1/b1rpP3/2bK4 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Fleck MT, 1996

B1N5/2Qp4/pp1p2p1/8/1BPkp1NR/6p1/b1rpP3/2bK4

#2

9 + 12

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc4
      • 2.Qxd6#
    • 1...Bxc4
      • 2.Qxb6#
  • Tries
    • 1.Sh6?
      • threat
        • 2.Rxe4#
      • 1...Ke3
        • 2.Qxb6#
      • 1...Ke5
        • 2.Qxd6#
      • 1...d5!
    • 1.Sxb6?
      • threat
        • 2.Qxd6#
      • 1...d5
        • 2.Qe5#
        • 2.Qc5#
      • 1...Bxc4!
    • 1.Sxd6?
      • threat
        • 2.Qxb6#
      • 1...b5
        • 2.Qb6#
        • 2.Qc5#
        • 2.Qa7#
      • 1...Rxc4!
    • 1.Qc6?
      • threat
        • 2.Qxe4#
        • 2.Qd5#
      • 1...Bxc4
        • 2.Qxe4#
        • 2.Qxb6#
      • 1...d5
        • 2.Qxd5#
      • 1...e3
        • 2.Qe4#
        • 2.Qd5#
      • 1...dxc6!
    • 1.Qb7?
      • threat
        • 2.Qxe4#
        • 2.Qd5#
      • 1...Bxc4
        • 2.Qxe4#
        • 2.Qxb6#
      • 1...d5
        • 2.Qxd5#
      • 1...e3
        • 2.Qe4#
        • 2.Qd5#
      • 1...Kxc4!
  • Keys
    • 1.Se3!
      • threat
        • 2.Rxe4#
      • 1...Kxe3
        • 2.Qxb6#
      • 1...Ke5
        • 2.Qxd6#
      • 1...d5
        • 2.Sxc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(c);SBLOCK,XP(D)::QAR2(G),XP(j)
    • B(b);SBLOCK,XP(D)::QAB(G),XP(i)
  • Tries
    • Try
      • S(E);P_PINP(g)
      • Threat
        • R1(F),XP(g)
      • Vars
        • K(f);N_SPINP(g),S_FLIGHT::QAB(G),XP(i)
        • K(f);N_SPINP(g),P_SPINP(j),S_FLIGHT::QAB1(G),XP(j)
      • Refutation
        • P(j);
    • Try
      • S(I);XP(i)
      • Threat
        • QAR2(G),XP(j)
      • Refutation
        • B(b);XP(D)
    • Try
      • S(I);XP(j)
      • Threat
        • QAB(G),XP(i)
      • Refutation
        • R(c);XP(D)
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • P(j);::QAR1(G),XP(j)
      • Refutation
        • P(l);XQ(G)
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • P(j);::QAR1(G),XP(j)
      • Refutation
        • K(f);P-FLIGHT,XP(D)
  • Actual
    • S(E);P_PINP(g)
    • Threat
      • R1(F),XP(g)
    • Vars
      • K(f);N_SPINP(g),S_FLIGHT,XS(E)::QAB(G),XP(i)
      • K(f);N_SPINP(g),P_SPINP(j),S_FLIGHT::QAB1(G),XP(j)
      • P(j);::S(E),XR(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).