MESON Chess Problem Database

Problem Display
PID: 105411 (4R3/bB1pNQ2/r3nB1K/3N1p2/1R1pkP1p/7r/3PP3/5n2 w - - 0 1)

Bron, Vladimir Akimovich

64 Shakhmatnoe obozrenie, 1930

4R3/bB1pNQ2/r3nB1K/3N1p2/1R1pkP1p/7r/3PP3/5n2

#2

11 + 10

35 L'Italia Scacchistica 1930
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.d3#
    • 1...Rh2
      • 2.d3#
    • 1...Se3
      • 2.d3#
    • 1...Sg3
      • 2.d3#
    • 1...Sxf4
      • 2.Sc3#
    • 1...Sc5
      • 2.Rxd4#
    • 1...d6
      • 2.Qxe6#
  • Tries
    • 1.Be5?
      • threat
        • 2.Sc3#
        • 2.Sf6#
        • 2.Qxf5#
      • 1...Sc5+
        • 2.Sf6#
      • 1...Sg5+
        • 2.Sf6#
      • 1...Sc7+
        • 2.Sf6#
      • 1...Sg7+
        • 2.Sf6#
      • 1...Sd8+
        • 2.Sf6#
      • 1...Sf8+
        • 2.Sf6#
      • 1...Sxd2
        • 2.Qxf5#
      • 1...Rc6
        • 2.Sf6#
        • 2.Qxf5#
      • 1...Rc3
        • 2.Sxc3#
        • 2.Sf6#
        • 2.Qxf5#
      • 1...Se3
        • 2.Sc3#
        • 2.Sf6#
        • 2.d3#
      • 1...Sg3
        • 2.Sc3#
        • 2.Sf6#
        • 2.d3#
      • 1...Sxf4+!
    • 1.Qg6?
      • threat
        • 2.Qxf5#
      • 1...Se3
        • 2.d3#
      • 1...Sg3
        • 2.d3#
      • 1...Sg7!
    • 1.Qh7?
      • threat
        • 2.Qxf5#
      • 1...Se3
        • 2.d3#
      • 1...Sg3
        • 2.d3#
      • 1...Sg7!
  • Keys
    • 1.Bxd4!
      • threat
        • 2.Qxf5#
      • 1...Sxd4+
        • 2.Sc6#
      • 1...Sxf4+
        • 2.Sf6#
      • 1...Sc5+
        • 2.Bf6#
      • 1...Sg5+
        • 2.Bb6#
      • 1...Sc7+
        • 2.Bb6#
      • 1...Sg7+
        • 2.Bb6#
      • 1...Sd8+
        • 2.Bb6#
      • 1...Sf8+
        • 2.Bb6#
      • 1...Se3
        • 2.d3#
      • 1...Sg3
        • 2.d3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 6
    • REMOVED MATES = 3
  • Sets
    • R(b);N_GUARD::P(A)
    • S(a);S_CUTR(b)::P(A)
    • S(h);P_PINB(F),SBLOCK,XP(D)::B(H)+S(E),DCHECK
    • S(h);N_GUARD,P_PINB(F),S_CUTB(i)::R1(C),XP(c)
    • P(j);N_GUARD,S_CUTR(g)::QAR2(J),XS(h)
  • Tries
    • Try
      • B(F);
      • Threat
        • DUALS(3)
      • Vars
        • S(h);CHECK::B(H)+S(E),DCHECK
        • S(a);XP(A)::QAB1(J),XP(f)
      • Refutation
        • S(h);CHECK,XP(D)
    • Try
      • Q(J);
      • Threat
        • QAB1(J),XP(f)
      • Vars
        • S(a);S_CUTR(b)::P(A)
      • Refutation
        • S(h);
    • Try
      • Q(J);
      • Threat
        • QAB1(J),XP(f)
      • Vars
        • S(a);S_CUTR(b)::P(A)
      • Refutation
        • S(h);P_PINB(F)
  • Actual
    • B(F);XP(c)
    • Threat
      • QAB1(J),XP(f)
    • Vars
      • S(h);CHECK,P_SPINS(h),XB(F)::R(K)+S(I)
      • S(h);CHECK,SBLOCK,XP(D)::B(H)+S(E),DCHECK
      • S(h);CHECK,N_GUARD,S_CUTB(i)::R(C)+B(F)
      • S(h);CHECK,N_GUARD::R(C)+B(F)
      • S(a);S_CUTR(b)::P(A)
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).