MESON Chess Problem Database

Problem Display
PID: 263294 (3B4/8/2ppp3/2NpN3/P2k4/1RrPpR2/8/Qn2K3 w - - 0 1)

Antonov, Yuri Mikhailovich

Szachy, 1978

3B4/8/2ppp3/2NpN3/P2k4/1RrPpR2/8/Qn2K3

#2

9 + 8

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc5
      • 2.Bb6#
    • 1...Kxe5
      • 2.Bf6#
    • 1...Sd2
      • 2.Qxc3#
    • 1...Sa3
      • 2.Qxc3#
  • Tries
    • 1.Scd7?
      • threat
        • 2.Rb4#
        • 2.Rf4#
      • 1...c5
        • 2.Rf4#
      • 1...Sd2
        • 2.Qxc3#
      • 1...Sa3
        • 2.Rf4#
        • 2.Qxc3#
      • 1...e2
        • 2.Sxc6#
        • 2.Rb4#
      • 1...dxe5!
    • 1.Sed7?
      • threat
        • 2.Rb4#
        • 2.Rf4#
      • 1...Sd2
        • 2.Qxc3#
      • 1...Sa3
        • 2.Rf4#
        • 2.Qxc3#
      • 1...e2
        • 2.Sxe6#
        • 2.Rb4#
      • 1...e5
        • 2.Rb4#
      • 1...dxc5!
    • 1.Bb6?
      • threat
        • 2.Sxc6#
      • 1...Kxe5
        • 2.Sd7#
      • 1...dxe5
        • 2.Rb4#
      • 1...dxc5!
    • 1.Bf6?
      • threat
        • 2.Sxe6#
      • 1...Kxc5
        • 2.Sd7#
      • 1...dxc5
        • 2.Rf4#
      • 1...dxe5!
    • 1.Rxc3?
      • threat
        • 2.Sxc6#
        • 2.Rc4#
      • 1...Kxe5
        • 2.Bf6#
      • 1...dxe5
        • 2.Sb3#
        • 2.Sxe6#
        • 2.Rc4#
      • 1...Sxc3!
    • 1.Rb4+?
      • 1...Kxe5
        • 2.Sd7#
        • 2.Bf6#
        • 2.d4#
      • 1...Kxc5!
    • 1.Rf4+?
      • 1...Kxc5
        • 2.Sd7#
        • 2.Bb6#
        • 2.d4#
      • 1...Kxe5!
  • Keys
    • 1.Ke2!
      • 1...Kxc5
        • 2.Bb6#
      • 1...Kxe5
        • 2.Bf6#
      • 1...dxc5
        • 2.Sxc6#
      • 1...dxe5
        • 2.Sxe6#
      • 1...Sd2
        • 2.Qxc3#
      • 1...Sa3
        • 2.Qxc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(d);N_SPINR(b),OGATEB,S_FLIGHT,XS(G)::B(I)
    • K(d);OGATEB,S_FLIGHT,XS(H)::B(I)
    • S(a);N_GUARD::QAB1(A),XR(b)
  • Tries
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • P(f);::R(E)
        • S(a);N_GUARD::QAB1(A),XR(b)
      • Refutation
        • P(g);XS(H)
    • Try
      • S(H);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);N_GUARD::QAB1(A),XR(b)
        • P(h);::R(C)
      • Refutation
        • P(g);XS(G)
    • Try
      • B(I);
      • Threat
        • S(H),XP(f)
      • Vars
        • K(d);S_CUTP(f),S_FLIGHT,XS(H)::S(G)
        • P(g);SBLOCK,XS(H)::R(C)
      • Refutation
        • P(g);P_SPINP(g),XS(G)
    • Try
      • B(I);
      • Threat
        • S(G),XP(h)
      • Vars
        • K(d);N_SPINR(b),S_CUTP(h),S_FLIGHT,XS(G)::S(H)
        • P(g);SBLOCK,XS(G)::R(E)
      • Refutation
        • P(g);P_SPINP(g),XS(H)
    • Try
      • R(C);XR(b)
      • Threat
        • DUALS(2)
      • Vars
        • K(d);OGATEB,S_FLIGHT,XS(H)::B(I)
      • Refutation
        • S(a);P_SPINS(a),XR(C)
    • Try
      • R(C);CHECK
      • Refutation
        • K(d);N_SPINR(b),S_FLIGHT,XS(G)
    • Try
      • R(E);CHECK
      • Refutation
        • K(d);S_FLIGHT,XS(H)
  • Actual
    • K(B);P-FLIGHT
    • Vars
      • K(d);N_SPINR(b),OGATEB,S_FLIGHT,XS(G)::B(I)
      • K(d);OGATEB,S_FLIGHT,XS(H)::B(I)
      • P(g);SBLOCK,XS(G)::S(H),XP(f)
      • P(g);SBLOCK,XS(H)::S(G),XP(h)
      • S(a);N_GUARD::QAB1(A),XR(b)
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).