MESON Chess Problem Database

Problem Display
PID: 173662 (2N5/B1p1r3/4p3/pP1k1n1R/3P2Rp/1r1B1N1K/Q7/n7 w - - 0 1)

Boros, Sandor

Shakhmatny Listok, 1928

2N5/B1p1r3/4p3/pP1k1n1R/3P2Rp/1r1B1N1K/Q7/n7

#2

10 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sc2
      • 2.Qxb3#
  • Tries
    • 1.Se1?
      • threat
        • 2.Qg2#
      • 1...Sc2
        • 2.Qxb3#
      • 1...e5!
    • 1.Sg1?
      • threat
        • 2.Qg2#
      • 1...Sc2
        • 2.Qxb3#
      • 1...e5!
    • 1.Sh2?
      • threat
        • 2.Qg2#
      • 1...Sc2
        • 2.Qxb3#
      • 1...e5!
    • 1.Sxh4?
      • threat
        • 2.Qg2#
      • 1...Sc2
        • 2.Qxb3#
      • 1...e5!
    • 1.Qe2?
      • threat
        • 2.Bc4#
        • 2.Be4#
        • 2.Qe4#
        • 2.Qe5#
      • 1...Rxb5
        • 2.Be4#
        • 2.Qe4#
      • 1...e5
        • 2.Bc4#
      • 1...Rc3
        • 2.Be4#
        • 2.Qe4#
        • 2.Qe5#
      • 1...Rb4
        • 2.Be4#
        • 2.Qe4#
        • 2.Qe5#
      • 1...Rxd3!
  • Keys
    • 1.Se5!
      • threat
        • 2.Qg2#
      • 1...Sxd4
        • 2.Rxd4#
      • 1...Sc2
        • 2.Qxb3#
      • 1...Se3
        • 2.Be4#
      • 1...Sg3
        • 2.Bc4#
      • 1...Sd6
        • 2.Sxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB(A),XR(b)
  • Tries
    • Try
      • S(C);P_SPINB(B)
      • Threat
        • QAB(A)
      • Vars
        • S(a);N_GUARD::QAB(A),XR(b)
      • Refutation
        • P(g);N_SPINS(f)
    • Try
      • S(C);P_SPINB(B)
      • Threat
        • QAB(A)
      • Vars
        • S(a);N_GUARD::QAB(A),XR(b)
      • Refutation
        • P(g);N_SPINS(f)
    • Try
      • S(C);P_SPINB(B)
      • Threat
        • QAB(A)
      • Vars
        • S(a);N_GUARD::QAB(A),XR(b)
      • Refutation
        • P(g);N_SPINS(f)
    • Try
      • S(C);P_SPINB(B),XP(c)
      • Threat
        • QAB(A)
      • Vars
        • S(a);N_GUARD::QAB(A),XR(b)
      • Refutation
        • P(g);N_SPINS(f)
    • Try
      • Q(A);N_PINR(b)
      • Threat
        • DUALS(4)
      • Vars
        • P(g);N_SPINS(f)::B(B)
      • Refutation
        • R(b);P_PINS(C),XB(B)
  • Actual
    • S(C);N_PINS(f),P_SPINB(B)
    • Threat
      • QAB(A)
    • Vars
      • S(f);OGATE,XP(E)::R1(F),XS(f)
      • S(a);N_GUARD::QAB(A),XR(b)
      • S(f);N_PINB(B)::B(B)
      • S(f);N_GUARD,SBLOCK::S(J),XR(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).