MESON Chess Problem Database

Problem Display
PID: 278342 (2NR4/B1p5/4p1Q1/3p1rN1/B1k5/P4b1R/2nP4/2K5 w - - 0 1)

Vladimirov, V?

Stella Polaris, 1972

2NR4/B1p5/4p1Q1/3p1rN1/B1k5/P4b1R/2nP4/2K5

#2

10 + 7

5454 Near Snap 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Bb5#
    • 1...Rf4
      • 2.Qxc2#
    • 1...Re5
      • 2.Qxc2#
    • 1...Rxg5
      • 2.Qxc2#
    • 1...Rf6
      • 2.Qxc2#
    • 1...Rf7
      • 2.Qxc2#
    • 1...Rf8
      • 2.Qxc2#
    • 1...Bd1
      • 2.Rc3#
    • 1...Bh1
      • 2.Rc3#
    • 1...Be2
      • 2.Rc3#
    • 1...Bg2
      • 2.Rc3#
    • 1...Be4
      • 2.Rc3#
    • 1...Bg4
      • 2.Rc3#
    • 1...Bh5
      • 2.Rc3#
    • 1...e5
      • 2.Qa6#
  • Tries
    • 1.Sd6+?
      • 1...Kd3
        • 2.Bb5#
      • 1...cxd6!
  • Keys
    • 1.Rxd5!
      • 1...Kxd5
        • 2.Qxe6#
      • 1...Rxd5
        • 2.Qxc2#
      • 1...Rxg5
        • 2.Qd3#
      • 1...Bxd5
        • 2.Rc3#
      • 1...Sxa3
        • 2.Rd4#
      • 1...exd5
        • 2.Qa6#
      • 1...Sd4
        • 2.Rxd4#
      • 1...Rf4
        • 2.Qd3#
      • 1...Re5
        • 2.Qd3#
      • 1...Rf6
        • 2.Qd3#
      • 1...Rf7
        • 2.Qd3#
      • 1...Rf8
        • 2.Qd3#
      • 1...Bd1
        • 2.Bb3#
      • 1...Bh1
        • 2.Bb3#
      • 1...Be2
        • 2.Bb3#
      • 1...Bg2
        • 2.Bb3#
      • 1...Be4
        • 2.Bb3#
      • 1...Bg4
        • 2.Bb3#
      • 1...Bh5
        • 2.Bb3#
      • 1...Sa1
        • 2.Rd4#
      • 1...Se1
        • 2.Rd4#
      • 1...Se3
        • 2.Rd4#
      • 1...Sb4
        • 2.Rd4#
      • 1...e5
        • 2.Qc6#
      • 1...c5
        • 2.Sb6#
      • 1...c6
        • 2.Sb6#

Anticipated by 271065(1960)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 14
    • ADDED MATES = 12
    • REMOVED MATES = 1
  • Sets
    • K(c);N_GUARD,P_SPINB(b),P_SPINP(d),P_SPINR(e),S_FLIGHT::B(E)
    • R(e);OGATE::QAR2(G),XS(a)
    • R(e);OGATE,XS(F)::QAR2(G),XS(a)
    • B(b);OGATE::R1(D)
    • P(f);OGATE::QAB(G)
  • Tries
    • Try
      • S(I);CHECK
      • Vars
        • K(c);N_GUARD,P_SPINB(b),P_SPINR(e),S_FLIGHT::B(E)
      • Refutation
        • P(g);XS(I)
  • Actual
    • R(J);XP(d)
    • Vars
      • K(c);OGATEB,S_FLIGHT,XR(J)::QAB1(G),XP(f)
      • R(e);OGATE,SBLOCK,XR(J)::QAR2(G),XS(a)
      • R(e);OGATE,XS(F)::QAB1(G)
      • B(b);OGATE,SBLOCK,XR(J)::R1(D)
      • S(a);N_GUARD,XP(C)::R1(J)
      • P(f);OGATE,SBLOCK,XR(J)::QAB(G)
      • S(a);N_GUARD::R1(J),XS(a)
      • R(e);OGATE::QAB1(G)
      • B(b);::B(E)
      • S(a);N_GUARD::R1(J)
      • P(f);OGATE::QAR2(G)
      • P(g);N_GUARD::S(I)
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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).