MESON Chess Problem Database

Problem Display
PID: 231582 (8/7Q/3p4/2pP2p1/2Pp2P1/3K4/3N1pkp/5RbN w - - 0 1)

Schwarz, Bela

Nepszava, 1927

8/7Q/3p4/2pP2p1/2Pp2P1/3K4/3N1pkp/5RbN

#2

8 + 8

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxh1
      • 2.Qe4#
  • Tries
    • 1.Kc2?
      • 1...Kxh1
        • 2.Qe4#
      • 1...d3+!
    • 1.Ke2?
      • 1...Kxh1
        • 2.Qe4#
      • 1...d3+!
    • 1.Sb1?
      • 1...Kxh1
        • 2.Qe4#
      • 1...Kf3
        • 2.Qe4#
      • 1...Kxf1!
    • 1.Sb3?
      • 1...Kxh1
        • 2.Qe4#
      • 1...Kf3
        • 2.Qe4#
      • 1...Kxf1!
    • 1.Rxf2+?
      • 1...Kxh1
        • 2.Qe4#
      • 1...Bxf2!
    • 1.Qf5?
      • threat
        • 2.Qf3#
      • 1...Kxh1
        • 2.Qe4#
        • 2.Qf3#
      • 1...Kh3!
    • 1.Qg6?
      • 1...Kxh1
        • 2.Qe4#
      • 1...Kh3!
    • 1.Qh3+?
      • 1...Kxh1
        • 2.Qf3#
      • 1...Kxh3!
    • 1.Qe7?
      • 1...Kxh1
        • 2.Qe4#
      • 1...Kh3!
    • 1.Qf7?
      • threat
        • 2.Qf3#
      • 1...Kxh1
        • 2.Qf3#
      • 1...Kh3!
  • Keys
    • 1.Sf3!
      • 1...Kxf1
        • 2.Qh3#
      • 1...Kxh1
        • 2.Qxh2#
      • 1...Kxf3
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);P_SPINB(a),P_SPINP(d),S_FLIGHT,XS(B)::QAB(H)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(c);P_SPINB(a),P_SPINP(d),S_FLIGHT,XS(B)::QAB(H)
      • Refutation
        • P(e);CHECK
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(c);P_SPINB(a),P_SPINP(d),S_FLIGHT,XS(B)::QAB(H)
      • Refutation
        • P(e);CHECK
    • Try
      • S(C);
      • Vars
        • K(c);P_SPINB(a),P_SPINP(d),S_FLIGHT,XS(B)::QAB(H)
        • K(c);P_SPINP(b),S_FLIGHT::QAB1(H)
      • Refutation
        • K(c);S_FLIGHT,XR(A)
    • Try
      • S(C);
      • Vars
        • K(c);P_SPINB(a),P_SPINP(d),S_FLIGHT,XS(B)::QAB(H)
        • K(c);P_SPINP(b),S_FLIGHT::QAB1(H)
      • Refutation
        • K(c);S_FLIGHT,XR(A)
    • Try
      • R(A);CHECK,XP(b)
      • Vars
        • K(c);P_SPINP(d),S_FLIGHT,XS(B)::QAB(H)
      • Refutation
        • B(a);XR(A)
    • Try
      • Q(H);
      • Threat
        • QAB1(H)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(H);
      • Vars
        • K(c);P_SPINB(a),S_FLIGHT,XS(B)::QAB(H)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(H);CHECK
      • Vars
        • K(c);P_SPINB(a),P_SPINP(d),S_FLIGHT,XS(B)::QAB(H)
      • Refutation
        • K(c);S_FLIGHT,XQ(H)
    • Try
      • Q(H);
      • Vars
        • K(c);P_SPINB(a),S_FLIGHT,XS(B)::QAB(H)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(H);
      • Threat
        • QAB1(H)
      • Vars
        • K(c);P_SPINB(a),S_FLIGHT,XS(B)::QAB(H)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • S(C);
    • Vars
      • K(c);S_FLIGHT,XR(A)::QAB(H)
      • K(c);P_SPINB(a),P_SPINP(d),S_FLIGHT,XS(B)::QAR1(H),XP(d)
      • K(c);OGATEB,P_SPINP(b),S_FLIGHT,XS(C)::QAB1(H)
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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).