MESON Chess Problem Database

Problem Display
PID: 259698 (3N4/6Q1/1KPp1r1N/3Pq2R/3kPB2/4R3/nP6/5B2 w - - 0 1)

Savchenko, V?

Pravda Vostoka, 1950

(First published on Wed Apr 12 1950)

3N4/6Q1/1KPp1r1N/3Pq2R/3kPB2/4R3/nP6/5B2

#2

12 + 5

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd5
      • 2.Rxd5#
    • 1...Qf5
      • 2.Sxf5#
    • 1...Qg5
      • 2.Se6#
    • 1...Qxh5
      • 2.Se6#
    • 1...Qe6
      • 2.Sxe6#
    • 1...Qe7
      • 2.Sf5#
    • 1...Qe8
      • 2.Sf5#
    • 1...Rf5
      • 2.Sxf5#
      • 2.Se6#
    • 1...Re6
      • 2.Sf5#
      • 2.Sxe6#
    • 1...Rg6
      • 2.Sf5#
    • 1...Rf7
      • 2.Se6#
    • 1...Rf8
      • 2.Se6#
    • 1...Sc3
      • 2.bxc3#
  • Tries
    • 1.Ka5?
      • threat
        • 2.Qa7#
      • 1...Qxd5+
        • 2.Rxd5#
      • 1...Kc5
        • 2.Qa7#
      • 1...Rf7
        • 2.Se6#
      • 1...Qe7!
    • 1.Sf5+?
      • 1...Rxf5
        • 2.Se6#
      • 1...Qxf5!
    • 1.Se6+?
      • 1...Rxe6
        • 2.Sf5#
      • 1...Qxe6!
    • 1.Re1?
      • threat
        • 2.Qg1#
      • 1...Qxf4
        • 2.Se6#
      • 1...Rxf4
        • 2.Se6#
      • 1...Qg5
        • 2.Se6#
      • 1...Rg6
        • 2.Sf5#
      • 1...Qxe4!
  • Keys
    • 1.Kb5!
      • threat
        • 2.Qa7#
      • 1...Qxd5+
        • 2.Rxd5#
      • 1...Sc3+
        • 2.bxc3#
      • 1...Qe7
        • 2.Sf5#
      • 1...Rf7
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 7
  • Sets
    • Q(c);OGATE,P_SPINR(e),XP(F)::R1(G),XQ(c)
    • Q(c);N_GUARD,P_SPINR(e)::S(J),XQ(c)
    • Q(c);N_GUARD,P_SPINR(e)::S(L)
    • Q(c);N_GUARD,P_SPINR(e),XR(G)::S(L)
    • Q(c);N_GUARD,P_SPINR(e)::S(L),XQ(c)
    • Q(c);N_GUARD,P_SPINR(e)::S(J)
    • R(e);N_GUARD,P_SPINQ(c)::S(J)
    • R(e);N_GUARD,P_SPINQ(c)::S(L)
    • S(a);OGATE::P(B),XS(a)
  • Tries
    • Try
      • K(H);P_SPINP(F),S_FLIGHT
      • Threat
        • QAB(K)
      • Vars
        • Q(c);CHECK,OGATE,P_SPINR(e),XP(F)::R1(G),XQ(c)
        • K(b);N_PINP(F),S_FLIGHT::QAB(K)
        • R(e);N_GUARD,P_SPINQ(c)::S(L)
      • Refutation
        • Q(c);N_PINP(F),P_SPINR(e)
    • Try
      • S(J);CHECK
      • Vars
        • R(e);P_SPINQ(c),XS(J)::S(L)
      • Refutation
        • Q(c);P_SPINR(e),XS(J)
    • Try
      • S(L);CHECK
      • Vars
        • R(e);P_SPINQ(c),XS(L)::S(J)
      • Refutation
        • Q(c);P_SPINR(e),XS(L)
    • Try
      • R(C);
      • Threat
        • QAB(K)
      • Vars
        • Q(c);N_GUARD,P_SPINR(e),XB(E)::S(L)
        • R(e);N_GUARD,P_SPINQ(c),XB(E)::S(L)
        • Q(c);N_GUARD,P_SPINR(e)::S(L)
        • R(e);N_GUARD,P_SPINQ(c)::S(J)
      • Refutation
        • Q(c);P_SPINR(e),XP(D)
  • Actual
    • K(H);P-FLIGHT,P_SPINP(F)
    • Threat
      • QAB(K)
    • Vars
      • Q(c);CHECK,OGATE,P_SPINR(e),XP(F)::R1(G),XQ(c)
      • S(a);CHECK,OGATE::P(B),XS(a)
      • Q(c);N_GUARD,N_PINP(F),P_SPINR(e)::S(J)
      • R(e);N_GUARD,P_SPINQ(c)::S(L)
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).