MESON Chess Problem Database

Problem Display
PID: 266279 (4r3/R5p1/1NbPk1P1/2Ppp3/8/rQ2N3/2B3K1/B4R2 w - - 0 1)

Handloser, Ralf Chris

Schweizerische Schachzeitung, 2019

4r3/R5p1/1NbPk1P1/2Ppp3/8/rQ2N3/2B3K1/B4R2

#2

11 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Re7
      • 2.Rxe7#
    • 1...Ra8
      • 2.Re7#
    • 1...Rb8
      • 2.Re7#
    • 1...Rc8
      • 2.Re7#
    • 1...Rd8
      • 2.Re7#
    • 1...Rf8
      • 2.Re7#
    • 1...Rg8
      • 2.Re7#
    • 1...Rh8
      • 2.Re7#
    • 1...Ba4
      • 2.Qxd5#
    • 1...Bb5
      • 2.Qxd5#
    • 1...Bd7
      • 2.Qxd5#
  • Tries
    • 1.Sbxd5?
      • threat
        • 2.Bf5#
      • 1...Bxd5+
        • 2.Qxd5#
      • 1...Rf8
        • 2.Re7#
      • 1...e4
        • 2.Sf4#
      • 1...Ra2!
    • 1.Rf6+?
      • 1...gxf6
        • 2.Bf5#
      • 1...Kxf6!
  • Keys
    • 1.Sexd5!
      • threat
        • 2.Bf5#
      • 1...Bxd5+
        • 2.Qxd5#
      • 1...Ra2
        • 2.Qh3#
      • 1...Rf8
        • 2.Re7#
      • 1...e4
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 10
  • Sets
    • R(g);N_GUARD::R1(K),XR(g)
    • R(g);N_GUARD::R1(K)
    • B(d);N_GUARD::QAB1(E),XP(b)
  • Tries
    • Try
      • S(H);P_SPINS(H),XP(b)
      • Threat
        • B(C)
      • Vars
        • B(d);CHECK,OGATE,P_SPINB(d),XS(H)::QAB1(E),XB(d)
        • R(g);N_GUARD::R1(K)
        • P(c);N_PINS(H)::QAB(E)+S(H),DCHECK
      • Refutation
        • R(a);P_PINB(C)
    • Try
      • R(B);CHECK
      • Vars
        • P(f);SBLOCK,XR(B)::B(C)
      • Refutation
        • K(e);N_SPINP(b),P-FLIGHT,P_SPINP(c),XR(B)
  • Actual
    • S(F);P_SPINS(F),XP(b)
    • Threat
      • B(C)
    • Vars
      • B(d);CHECK,OGATE,P_SPINB(d),XS(F)::QAB1(E),XB(d)
      • R(a);N_GUARD,P_PINB(C)::QAB(E)
      • R(g);N_GUARD::R1(K)
      • P(c);N_PINS(F)::QAB(E)+S(F),DCHECK
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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).