MESON Chess Problem Database

Problem Display
PID: 109534 (2N4B/r1p1RK2/1b6/3k4/8/N6p/b7/2Q5 w - - 0 1)

Trzesowski, Andrzej

2nd Prize, White MT (A), 1952-1953

2N4B/r1p1RK2/1b6/3k4/8/N6p/b7/2Q5

#2

6 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Qc4#
    • 1...Bc4
      • 2.Qxc4#
    • 1...Bc5
      • 2.Qh1#
    • 1...c5
      • 2.Qh1#
    • 1...c6
      • 2.Qg5#
  • Tries
    • 1.Ba1?
      • threat
        • 2.Re5#
      • 1...Bc4
        • 2.Qxc4#
      • 1...Bc5
        • 2.Qh1#
      • 1...c5
        • 2.Qh1#
      • 1...c6
        • 2.Qg5#
      • 1...Bd4!
    • 1.Bb2?
      • threat
        • 2.Re5#
      • 1...Bc4
        • 2.Qxc4#
      • 1...Bc5
        • 2.Qh1#
      • 1...c5
        • 2.Qh1#
      • 1...c6
        • 2.Qg5#
      • 1...Bd4!
    • 1.Qc3?
      • threat
        • 2.Re5#
      • 1...Bc4
        • 2.Qxc4#
      • 1...Bc5
        • 2.Qf3#
      • 1...c5
        • 2.Qf3#
      • 1...c6
        • 2.Qe5#
      • 1...Bd4!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Rd7#
      • 1...Bc4
        • 2.Qxc4#
      • 1...Bc5
        • 2.Qe4#
      • 1...c5
        • 2.Qe4#
      • 1...c6
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::QAB1(A)
    • B(a);N_GUARD::QAB1(A),XB(a)
    • B(d);SBLOCK::QAB(A)
    • P(f);P_PINR(C),SBLOCK::QAB(A)
    • P(f);P_PINR(C),SBLOCK::QAR(A)
  • Tries
    • Try
      • B(F);
      • Threat
        • R1(C)
      • Vars
        • B(a);N_GUARD::QAB1(A),XB(a)
        • B(d);SBLOCK::QAB(A)
        • P(f);P_PINR(C),SBLOCK::QAB(A)
        • P(f);P_PINR(C),SBLOCK::QAR(A)
      • Refutation
        • B(d);
    • Try
      • B(F);
      • Threat
        • R1(C)
      • Vars
        • B(a);N_GUARD::QAB1(A),XB(a)
        • B(d);SBLOCK::QAB(A)
        • P(f);P_PINR(C),SBLOCK::QAB(A)
        • P(f);P_PINR(C),SBLOCK::QAR(A)
      • Refutation
        • B(d);
    • Try
      • Q(A);
      • Threat
        • R1(C)
      • Vars
        • B(a);N_GUARD::QAB1(A),XB(a)
        • B(d);SBLOCK::QAB(A)
        • P(f);P_PINR(C),SBLOCK::QAB(A)
        • P(f);P_PINR(C),SBLOCK::QAR1(A)
      • Refutation
        • B(d);
  • Actual
    • Q(A);
    • Threat
      • R(C)
    • Vars
      • B(a);N_GUARD::QAB1(A),XB(a)
      • B(d);SBLOCK::QAB1(A)
      • P(f);P_PINR(C),SBLOCK::QAB1(A)
      • P(f);P_PINR(C),SBLOCK::QAR2(A)
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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).