MESON Chess Problem Database

Problem Display
PID: 247942 (6b1/N1p3pp/2R2P2/1p1k4/1Pr1R3/1NpP3B/Q6K/8 w - - 0 1)

Abrosimov, Viktor Yakovlevich

Zarubin, Eduard

Uralski Problemist, 2006

6b1/N1p3pp/2R2P2/1p1k4/1Pr1R3/1NpP3B/Q6K/8

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Sxd4#
    • 1...Rc5
      • 2.Sxc5#
    • 1...Be6
      • 2.Bxe6#
  • Tries
    • 1.Rexc4?
      • threat
        • 2.R4c5#
      • 1...bxc4
        • 2.Qa5#
      • 1...Ke5!
    • 1.Rd4+?
      • 1...Ke5
        • 2.Qe2#
      • 1...Rxd4!
    • 1.Rc5+?
      • 1...Kd6
        • 2.Sxb5#
        • 2.Sc8#
      • 1...Rxc5!
    • 1.Qe2?
      • threat
        • 2.Re5#
      • 1...Rxe4
        • 2.Qxe4#
      • 1...Rxc6
        • 2.Rd4#
      • 1...gxf6!
    • 1.Qf2?
      • threat
        • 2.Qf5#
      • 1...Rxe4
        • 2.Qc5#
      • 1...Rxc6
        • 2.Qd4#
      • 1...Be6
        • 2.Bxe6#
      • 1...g6!
    • 1.Qg2?
      • threat
        • 2.Qg5#
      • 1...Rxe4
        • 2.Qxe4#
      • 1...Rxc6
        • 2.Re6#
      • 1...gxf6
        • 2.Qxg8#
      • 1...Be6
        • 2.Bxe6#
      • 1...g5
        • 2.Qxg5#
      • 1...h6!
  • Keys
    • 1.Sc8!
      • threat
        • 2.Se7#
      • 1...Kxc6
        • 2.Qa8#
      • 1...Rxe4
        • 2.Rc5#
      • 1...Rxc6
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • R(b);::QAB(A)+S(C),XR(b)
    • B(h);N_GUARD::B(E),XB(h)
  • Tries
    • Try
      • R(G);XR(b)
      • Threat
        • R1(G)
      • Vars
        • P(c);OGATEB,XR(G)::QAR(A)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • R(G);CHECK
      • Vars
        • K(d);P-FLIGHT::QAR(A)
      • Refutation
        • R(b);XR(G)
    • Try
      • R(H);CHECK
      • Refutation
        • R(b);XR(H)
    • Try
      • Q(A);
      • Threat
        • R1(G)
      • Vars
        • R(b);OGATE,XR(G)::QAB1(A),XR(b)
        • R(b);N_GUARD,XR(H)::R1(G)
      • Refutation
        • P(f);XP(I)
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • R(b);N_GUARD,XR(G)::QAR1(A)
        • R(b);N_GUARD,XR(H)::QAR1(A)
        • B(h);N_GUARD::B(E),XB(h)
      • Refutation
        • P(f);
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • R(b);OGATE,P_SPINR(b),XR(G)::QAB1(A),XR(b)
        • R(b);N_GUARD,XR(H)::QAB(A)+R(G)
        • P(f);OGATE,XP(I)::QAB(A),XB(h)
        • B(h);N_GUARD::B(E),XB(h)
        • P(f);::QAR(A),XP(f)
      • Refutation
        • P(g);
  • Actual
    • S(J);
    • Threat
      • S(J)
    • Vars
      • K(d);OGATEB,S_FLIGHT,XR(H)::QAB(A)
      • R(b);N_GUARD,XR(G)::R1(H)
      • R(b);SBLOCK,XR(H)::QAB(A)+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).