MESON Chess Problem Database

Problem Display
PID: 821 (1q5B/1r6/1pBbpR2/1K1NRP2/1p1k3p/4p2r/1nP3Np/4Q3 w - - 0 1)

Parthasarathy, Dr Mukkur

1st Prize=, British Chess Magazine, 1966

1q5B/1r6/1pBbpR2/1K1NRP2/1p1k3p/4p2r/1nP3Np/4Q3

#2

10 + 12

5862 An ABC of Chess Problems 1970
3772 FIDE Album (1965-1967) 1976
4655 Michael Keller Ein Meister der Schachkomposition 1994
4640 Chess Wizardry: The New ABC of Chess Problems 1996
56 The Problemist 2001
133 The Problemist Supplement 2018

SOLUTION

  • SOUND
  • Sets
    • 1...b3
      • 2.Qc3#
  • Tries
    • 1.Sc3?
      • threat
        • 2.Re4#
      • 1...Bxe5
        • 2.Se2#
      • 1...exf5
        • 2.Rd5#
      • 1...Kxe5!
    • 1.Sdxe3?
      • threat
        • 2.Re4#
      • 1...Kxe5
        • 2.Rxe6#
      • 1...Rxe3
        • 2.Qxe3#
      • 1...exf5
        • 2.Sxf5#
      • 1...Bxe5!
    • 1.Sxb4?
      • threat
        • 2.Re4#
      • 1...Kxe5
        • 2.Qc3#
      • 1...Bxe5
        • 2.c3#
      • 1...exf5!
    • 1.Qxb4+?
      • 1...Kxe5
        • 2.Qf4#
      • 1...Sc4
        • 2.Qc3#
      • 1...Bxb4!
    • 1.Qxh4+?
      • 1...Kxe5
        • 2.Qf4#
      • 1...Rxh4!
  • Keys
    • 1.Sc7!
      • threat
        • 2.Re4#
      • 1...Kxe5
        • 2.Rf8#
      • 1...Bxe5
        • 2.Sxe6#
      • 1...exf5
        • 2.Rxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(e);N_GUARD::QAB1(A)
  • Tries
    • Try
      • S(E);
      • Threat
        • R1(F)
      • Vars
        • B(i);SBLOCK,XR(F)::S(E)
        • P(j);N_GUARD,XP(G)::R1(F)
      • Refutation
        • K(f);P_SPINP(c),S_FLIGHT,XR(F)
    • Try
      • S(E);XP(c)
      • Threat
        • R1(F)
      • Vars
        • K(f);OGATEB,S_FLIGHT,XR(F)::B(J)+R(I),DCHECK,XP(j)
        • R(d);OGATE,XS(E)::QAB1(A),XR(d)
        • P(j);XP(G)::S(E),XP(j)
      • Refutation
        • B(i);XR(F)
    • Try
      • S(E);XP(e)
      • Threat
        • R1(F)
      • Vars
        • K(f);P_SPINP(c),S_FLIGHT,XR(F)::QAB(A)
        • B(i);SBLOCK,XR(F)::P(B)
      • Refutation
        • P(j);XP(G)
    • Try
      • Q(A);CHECK,XP(e)
      • Vars
        • K(f);OGATE,S_FLIGHT,XR(F)::QAB1(A)
        • S(a);P_SPINS(a)::QAB1(A)
      • Refutation
        • B(i);XQ(A)
    • Try
      • Q(A);CHECK,XP(g)
      • Vars
        • K(f);S_FLIGHT,XR(F)::QAB1(A)
      • Refutation
        • R(d);XQ(A)
  • Actual
    • S(E);
    • Threat
      • R1(F)
    • Vars
      • K(f);OGATEB,P_SPINP(c),S_FLIGHT,XR(F)::B(J)+R(I)
      • B(i);SBLOCK,XR(F)::S(E),XP(j)
      • P(j);OGATE,XP(G)::R(I),XB(i)
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).