MESON Chess Problem Database

Problem Display
PID: 206532 (8/4p3/1p2B3/1P4p1/3kN1Np/1pp1rP1K/1n2P1p1/1Q3nB1 w - - 0 1)

Rothler, Emil

Uj Nemezdek, 1925

8/4p3/1p2B3/1P4p1/3kN1Np/1pp1rP1K/1n2P1p1/1Q3nB1

#2

9 + 11

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2
      • 2.Bxe3#
    • 1...Sh2
      • 2.Bxe3#
    • 1...Sg3
      • 2.Bxe3#
    • 1...Sd1
      • 2.Qd3#
    • 1...Sd3
      • 2.Qxd3#
    • 1...Sa4
      • 2.Qd3#
    • 1...Sc4
      • 2.Qd3#
    • 1...c2
      • 2.Qxb2#
  • Tries
    • 1.Kxg2?
      • 1...Sd2
        • 2.Bxe3#
      • 1...Sh2
        • 2.Bxe3#
      • 1...Sg3
        • 2.Bxe3#
      • 1...Sd1
        • 2.Qd3#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sa4
        • 2.Qd3#
      • 1...Sc4
        • 2.Qd3#
      • 1...c2
        • 2.Qxb2#
      • 1...h3+!
    • 1.Qc2?
      • threat
        • 2.Qxc3#
      • 1...Sd1
        • 2.Qd3#
      • 1...Sa4
        • 2.Qd3#
      • 1...bxc2!
    • 1.Qd1+?
      • 1...Sd2
        • 2.Bxe3#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sxd1!
  • Keys
    • 1.Qa1!
      • 1...Sd2
        • 2.Bxe3#
      • 1...Sh2
        • 2.Bxe3#
      • 1...Sg3
        • 2.Bxe3#
      • 1...Sd1
        • 2.Qa4#
      • 1...Sd3
        • 2.Qxc3#
      • 1...Sa4
        • 2.Qxa4#
      • 1...Sc4
        • 2.Qxc3#
      • 1...c2
        • 2.Qxb2#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 4
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::B(B),XR(f)
    • S(a);N_GUARD,N_PINP(D)::B(B),XR(f)
    • S(b);N_GUARD::QAR1(A)
    • S(b);N_GUARD::QAR1(A),XS(b)
    • P(e);OGATEB::QAB(A),XS(b)
  • Tries
    • Try
      • K(E);N_SPINP(D),S_FLIGHT,XP(c)
      • Vars
        • S(a);N_GUARD::B(B),XR(f)
        • S(b);N_GUARD::QAR1(A)
        • S(b);N_GUARD::QAR1(A),XS(b)
        • P(e);OGATEB::QAB(A),XS(b)
      • Refutation
        • P(h);CHECK
    • Try
      • Q(A);
      • Threat
        • QAB1(A),XP(e)
      • Vars
        • S(b);N_GUARD::QAR1(A)
      • Refutation
        • P(d);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • S(a);P_SPINS(a)::B(B),XR(f)
        • S(b);N_GUARD,P_SPINS(b)::QAR1(A),XS(b)
      • Refutation
        • S(b);XQ(A)
  • Actual
    • Q(A);
    • Vars
      • S(a);N_GUARD::B(B),XR(f)
      • S(a);N_GUARD,N_PINP(D)::B(B),XR(f)
      • S(b);N_GUARD,P_SPINP(e)::QAR(A)
      • S(b);OGATE,P_SPINP(e)::QAB1(A),XP(e)
      • S(b);N_GUARD,P_SPINP(e)::QAR(A),XS(b)
      • P(e);OGATEB,P_SPINS(b)::QAB(A),XS(b)
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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).