MESON Chess Problem Database

Problem Display
PID: 44722 (4N3/1Q3Bpb/3b3B/3N1n1R/K1pk3r/3rpPpq/1P6/3R4 w - - 0 1)

Heinonen, Unto

1st Prize, Satakunnan juhlakili, 1984

4N3/1Q3Bpb/3b3B/3N1n1R/K1pk3r/3rpPpq/1P6/3R4

#2

10 + 11

3748 FIDE Album (1983-1985) 1992

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qb6#
    • 1...Ke5
      • 2.Bxg7#
    • 1...Be5
      • 2.Qb6#
      • 2.Qa7#
    • 1...Se7
      • 2.Bxe3#
  • Tries
    • 1.Sf4?
      • threat
        • 2.Qd5#
      • 1...Kc5
        • 2.Se6#
      • 1...Ke5
        • 2.Qe4#
      • 1...Se7
        • 2.Se2#
      • 1...e2!
    • 1.Sdc7?
      • threat
        • 2.Qd5#
      • 1...Kc5
        • 2.Se6#
      • 1...Se7
        • 2.Sb5#
      • 1...Ke5!
    • 1.Se7?
      • threat
        • 2.Qd5#
      • 1...Kc5
        • 2.Qa7#
      • 1...Ke5
        • 2.Sc6#
      • 1...Sxe7!
    • 1.Bxg7+?
      • 1...Kc5
        • 2.Qb5#
        • 2.Qb6#
      • 1...Be5
        • 2.Qb6#
        • 2.Qa7#
      • 1...Sxg7!
    • 1.Qb6+?
      • 1...Ke5
        • 2.Bxg7#
      • 1...Bc5!
    • 1.Qa7+?
      • 1...Ke5
        • 2.Bxg7#
      • 1...Bc5!
  • Keys
    • 1.Sb4!
      • threat
        • 2.Qd5#
      • 1...Kc5
        • 2.Qa7#
      • 1...Ke5
        • 2.Sc6#
      • 1...Se7
        • 2.Sc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(f);N_SPINR(a),S_FLIGHT::QAB1(H)
    • K(f);N_SPINR(a),P_SPINS(h),S_FLIGHT::B(G),XP(j)
    • S(h);N_GUARD::B(G),XP(b)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAR1(H)
      • Vars
        • K(f);N_SPINR(a),P_SPINS(h),S_FLIGHT::S(E)
        • K(f);N_SPINR(a),P_SPINS(h),S_FLIGHT::QAR1(H)
        • S(h);::S(E)
      • Refutation
        • P(b);
    • Try
      • S(E);
      • Threat
        • QAR1(H)
      • Vars
        • K(f);N_SPINR(a),P_SPINS(h),S_FLIGHT::S(E)
        • S(h);::S(E)
      • Refutation
        • K(f);N_SPINR(a),P_SPINS(h),S_FLIGHT
    • Try
      • S(E);
      • Threat
        • QAR1(H)
      • Vars
        • K(f);N_SPINR(a),P_SPINS(h),S_FLIGHT::QAB(H)
        • K(f);N_SPINR(a),P_SPINS(h),S_FLIGHT::S(E)
      • Refutation
        • S(h);XS(E)
    • Try
      • B(G);CHECK,XP(j)
      • Refutation
        • S(h);XB(G)
    • Try
      • Q(H);CHECK
      • Vars
        • K(f);N_SPINR(a),P_SPINS(h),S_FLIGHT::B(G),XP(j)
      • Refutation
        • B(i);P_SPINB(i)
    • Try
      • Q(H);CHECK
      • Vars
        • K(f);N_SPINR(a),P_SPINS(h),S_FLIGHT::B(G),XP(j)
      • Refutation
        • B(i);P_SPINB(i)
  • Actual
    • S(E);
    • Threat
      • QAR1(H)
    • Vars
      • K(f);N_SPINR(a),P_SPINS(h),S_FLIGHT::QAB(H)
      • K(f);N_SPINR(a),P_SPINS(h),S_FLIGHT::S(E)
      • S(h);::S(E)
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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).