MESON Chess Problem Database

Problem Display
PID: 242031 (8/8/8/6p1/6B1/4P3/1Qpk1K2/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1936

8/8/8/6p1/6B1/4P3/1Qpk1K2/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Qd4#
  • Tries
    • 1.Kf1?
      • 1...Kd3
        • 2.Qd4#
      • 1...Kxe3!
    • 1.Kg1?
      • 1...Ke1
        • 2.Qc1#
        • 2.Qc3#
        • 2.Qb4#
      • 1...Kd3
        • 2.Qd4#
      • 1...Kxe3!
    • 1.Kg2?
      • 1...Ke1
        • 2.Qc1#
        • 2.Qc3#
        • 2.Qb4#
      • 1...Kd3
        • 2.Qd4#
      • 1...Kxe3!
    • 1.Kf3?
      • 1...Ke1
        • 2.Qc1#
      • 1...Kd3
        • 2.Qd4#
      • 1...Kd1!
    • 1.Kg3?
      • 1...Ke1
        • 2.Qc1#
      • 1...Kd3
        • 2.Qd4#
      • 1...Kxe3!
    • 1.Bd1?
      • threat
        • 2.Qxc2#
      • 1...Kd3
        • 2.Qd4#
        • 2.Qxc2#
      • 1...Kxd1!
    • 1.Bf3?
      • 1...Kd3
        • 2.Qd4#
      • 1...g4!
    • 1.Bh5?
      • 1...Kd3
        • 2.Qd4#
      • 1...g4!
    • 1.Qb4+?
      • 1...Kd3
        • 2.Be2#
        • 2.Bf5#
        • 2.Qd4#
      • 1...Kc1!
  • Keys
    • 1.Bf5!
      • threat
        • 2.Qxc2#
      • 1...Kd1
        • 2.Qxc2#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT,XP(C)
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT,XP(C)
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT,XP(C)
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(b);N_SPINP(a),S_FLIGHT::QAR2(A)
        • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(b);N_SPINP(a),S_FLIGHT::QAR2(A)
        • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT,XP(C)
    • Try
      • B(D);
      • Threat
        • QAR1(A),XP(a)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT,XB(D)
    • Try
      • B(D);
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
      • Refutation
        • P(c);
    • Try
      • B(D);
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
      • Refutation
        • P(c);
    • Try
      • Q(A);CHECK,N_PINP(a)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • B(D);
    • Threat
      • QAR1(A),XP(a)
    • Vars
      • K(b);N_SPINP(a),P-FLIGHT::QAB1(A),XP(a)
HTML5 logo

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).