MESON Chess Problem Database

Problem Display
PID: 231581 (4R3/3pb2B/3p4/5R2/1K1Pk2p/4n2r/b1N4P/2N1Q3 w - - 0 1)

Bajtay, Jozsef

Nepszava, 1927

4R3/3pb2B/3p4/5R2/1K1Pk2p/4n2r/b1N4P/2N1Q3

#2

9 + 8

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxh2
      • 2.Qxe3#
    • 1...Bb1
      • 2.Rxe7#
    • 1...Bd5
      • 2.Rf1#
      • 2.Rf2#
      • 2.Rf6#
      • 2.Rf7#
      • 2.Rff8#
    • 1...d5+
      • 2.Rxe7#
  • Tries
    • 1.Rg5+?
      • 1...Kf3
        • 2.Qxe3#
      • 1...Kf4!
    • 1.Qxh4+?
      • 1...Sg4
        • 2.Qxg4#
      • 1...Rxh4!
    • 1.Qh1+?
      • 1...Rf3
        • 2.Qxf3#
      • 1...Sg2!
    • 1.Qe2?
      • threat
        • 2.Qd3#
      • 1...d5+
        • 2.Rxe7#
      • 1...Bc4!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Sf2#
      • 1...d5+
        • 2.Sc5#
      • 1...Kxd3
        • 2.Rf3#
      • 1...Rxh2
        • 2.Qxe3#
      • 1...Rf3
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(c);N_GUARD,XP(D)::QAR1(B),XS(b)
    • B(a);N_GUARD::R(I),XB(h)
    • P(f);CHECK,S_CUTB(a)::R(I),XB(h)
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • K(d);N_SPINB(h),N_SPINS(b),S_FLIGHT::QAR1(B),XS(b)
      • Refutation
        • K(d);N_SPINB(h),N_SPINS(b),P-FLIGHT
    • Try
      • Q(B);CHECK,N_PINS(b),XP(e)
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAR2(B),XS(b)
      • Refutation
        • R(c);XQ(B)
    • Try
      • Q(B);CHECK,N_PINS(b)
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAB1(B),XR(c)
      • Refutation
        • S(b);P_SPINS(b)
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • P(f);CHECK,S_CUTB(a)::R(I),XB(h)
      • Refutation
        • B(a);
  • Actual
    • S(A);
    • Threat
      • S(A)
    • Vars
      • P(f);CHECK,N_GUARD::S(A)
      • K(d);N_SPINB(h),N_SPINS(b),S_FLIGHT,XS(A)::B(H)+R(G)
      • R(c);N_GUARD,XP(D)::QAR1(B),XS(b)
      • R(c);SBLOCK::B(H)+R(G),DCHECK
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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).