MESON Chess Problem Database

Problem Display
PID: 180704 (7K/2p1Q1p1/1bB1p3/R1p1kpRN/1P1p1rP1/8/pN3P2/1br5 w - - 0 1)

Ersek, Tibor

Die Schwalbe, 2018

7K/2p1Q1p1/1bB1p3/R1p1kpRN/1P1p1rP1/8/pN3P2/1br5

#2

10 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Sc4#
    • 1...Re1
      • 2.Sc4#
    • 1...Rf1
      • 2.Sc4#
    • 1...Rg1
      • 2.Sc4#
    • 1...Rh1
      • 2.Sc4#
    • 1...Rc2
      • 2.Sd3#
    • 1...Rc4
      • 2.Sxc4#
    • 1...Re4
      • 2.Rxf5#
    • 1...Bc2
      • 2.Sc4#
    • 1...Bd3
      • 2.Sxd3#
    • 1...Ba7
      • 2.Qxc7#
  • Tries
    • 1.Rg6?
      • threat
        • 2.Rxe6#
        • 2.Qxe6#
      • 1...fxg4
        • 2.Qxe6#
      • 1...d3!
    • 1.Qxc5+?
      • 1...Rxc5
        • 2.Sc4#
      • 1...Bxc5!
    • 1.gxf5?
      • threat
        • 2.Qxe6#
      • 1...Rxf5
        • 2.f4#
      • 1...Bxf5
        • 2.Sd3#
      • 1...d3!
  • Keys
    • 1.bxc5!
      • threat
        • 2.Qxg7#
      • 1...Rxc5
        • 2.Sc4#
      • 1...Bxc5
        • 2.Qxc7#
      • 1...g6
        • 2.Qf6#
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 11
  • Sets
    • R(b);N_GUARD::S(A)
    • R(b);N_GUARD,P_PINS(G)::S(A)
    • R(b);S_CUTB(a)::S(A)
    • R(b);N_GUARD::S(A),XR(b)
    • R(e);N_GUARD,S_CUTB(a)::R1(F),XP(h)
    • B(a);S_CUTR(b)::S(A)
    • B(a);N_GUARD::S(A),XB(a)
    • B(i);N_GUARD::QAB(I),XP(k)
  • Tries
    • Try
      • R(F);
      • Threat
        • DUALS(2)
      • Vars
        • P(h);XP(D)::QAR1(I),XP(j)
      • Refutation
        • P(d);
    • Try
      • Q(I);CHECK,P_PINP(h),XP(f)
      • Vars
        • R(b);P_SPINR(b),XQ(I)::S(A)
      • Refutation
        • B(i);P_SPINB(i),XQ(I)
    • Try
      • P(D);XP(h)
      • Threat
        • QAR1(I),XP(j)
      • Vars
        • R(e);OGATE,P_SPINR(e),XP(D)::P(B)
        • B(a);N_GUARD,P_SPINB(a),XP(D)::S(A)
      • Refutation
        • P(d);
  • Actual
    • P(C);P_PINP(h),XP(f)
    • Threat
      • QAB(I),XP(l)
    • Vars
      • R(b);N_GUARD,P_SPINR(b),XP(C)::S(A)
      • B(i);N_GUARD,P_SPINB(i),XP(C)::QAB(I),XP(k)
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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).