MESON Chess Problem Database

Problem Display
PID: 227609 (8/3p2p1/2pP2P1/2P2NPR/4Pk2/2Q2p1P/8/4RK2 w - - 0 1)

Regos, Imre

Comm., Allgemeine Zeitung, 1926

8/3p2p1/2pP2P1/2P2NPR/4Pk2/2Q2p1P/8/4RK2

#2

11 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...f2
      • 2.Qg3#
  • Tries
    • 1.Sg3?
      • 1...Kxg3
        • 2.Qe5#
      • 1...f2!
    • 1.Sh4?
      • 1...f2
        • 2.Sg2#
      • 1...Kg3!
    • 1.Se7?
      • 1...Kg3
        • 2.Qe5#
      • 1...f2!
    • 1.Sxg7?
      • 1...Kg3
        • 2.Qe5#
      • 1...f2!
    • 1.Re2?
      • 1...f2
        • 2.Qg3#
      • 1...fxe2+!
    • 1.Rh7?
      • 1...f2
        • 2.Qg3#
      • 1...Kxg5!
    • 1.Rh8?
      • 1...f2
        • 2.Qg3#
      • 1...Kxg5!
    • 1.Qa3?
      • 1...f2
        • 2.Qg3#
      • 1...Ke5!
    • 1.Qb3?
      • 1...f2
        • 2.Qg3#
      • 1...Ke5!
    • 1.Qd3?
      • 1...f2
        • 2.Qg3#
      • 1...Ke5!
    • 1.h4?
      • 1...f2
        • 2.Qg3#
      • 1...Kg4!
  • Keys
    • 1.Se3!
      • 1...Kg3
        • 2.Qe5#
      • 1...Kxe4
        • 2.Rh4#
      • 1...f2
        • 2.Sg2#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATE::QAB1(C)
  • Tries
    • Try
      • S(G);
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT,XS(G)::QAB(C)
      • Refutation
        • P(a);
    • Try
      • S(G);
      • Vars
        • P(a);N_GUARD::S(G)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
    • Try
      • S(G);
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::QAB(C)
      • Refutation
        • P(a);
    • Try
      • S(G);XP(e)
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::QAB(C)
      • Refutation
        • P(a);
    • Try
      • R(A);
      • Vars
        • P(a);OGATE::QAB1(C)
      • Refutation
        • P(a);CHECK,XR(A)
    • Try
      • R(I);
      • Vars
        • P(a);OGATE::QAB1(C)
      • Refutation
        • K(b);S_FLIGHT,XP(H)
    • Try
      • R(I);
      • Vars
        • P(a);OGATE::QAB1(C)
      • Refutation
        • K(b);S_FLIGHT,XP(H)
    • Try
      • Q(C);
      • Vars
        • P(a);OGATE::QAB1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(a);OGATE::QAB1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(a);OGATE::QAB1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • P(D);
      • Vars
        • P(a);OGATE::QAB1(C)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(G);
    • Vars
      • K(b);S_FLIGHT::QAB(C)
      • K(b);P-FLIGHT,XP(E)::R(I)
      • P(a);N_GUARD::S(G)
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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).