MESON Chess Problem Database

Problem Display
PID: 66790 (B3R3/5p1K/5P1N/3nn3/Rqb1k1P1/5pP1/1bP2B2/5Q2 w - - 0 1)

Neumann, Itzhak

Skakbladet, 1935

B3R3/5p1K/5P1N/3nn3/Rqb1k1P1/5pP1/1bP2B2/5Q2

#2

11 + 8

5828 My Selected Chess Problems (Neumann) 1968

SOLUTION

  • SOUND
  • Sets
    • 1...Qe1
      • 2.Qd3#
      • 2.Qxe1#
    • 1...Qa5
      • 2.Qd3#
    • 1...Qc5
      • 2.Qd3#
    • 1...Qd6
      • 2.Qd3#
      • 2.Qe1#
    • 1...Qe7
      • 2.Qe1#
    • 1...Qf8
      • 2.Qd3#
      • 2.Qe1#
    • 1...Qb5
      • 2.Qd3#
      • 2.Qe1#
    • 1...Qb6
      • 2.Qd3#
    • 1...Qb7
      • 2.Qd3#
    • 1...Qb8
      • 2.Qd3#
      • 2.Qe1#
    • 1...Ba2
      • 2.Qd3#
      • 2.Qe1#
    • 1...Bb3
      • 2.Qd3#
      • 2.Qe1#
    • 1...Bd3
      • 2.Qxd3#
      • 2.cxd3#
  • Tries
    • 1.Bxd5+?
      • 1...Bxd5
        • 2.Qd3#
        • 2.Qe1#
      • 1...Kxd5!
    • 1.Rxb4?
      • threat
        • 2.Qd3#
        • 2.Qe1#
      • 1...Bc1
        • 2.Rxc4#
        • 2.Qd3#
        • 2.Qxc4#
      • 1...Bc3
        • 2.Qd3#
      • 1...Bd4!
    • 1.Qxc4+?
      • 1...Bd4
        • 2.Bxd5#
        • 2.Qd3#
        • 2.Qxd5#
      • 1...Qxc4!
  • Keys
    • 1.Sxf7!
      • threat
        • 2.Sg5#
      • 1...Qd2
        • 2.Sd6#
      • 1...Qe7
        • 2.Qe1#
      • 1...Qb7
        • 2.Qd3#
      • 1...Bc1
        • 2.Rxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • Q(c);P_SPINB(d)::QAB1(A)
    • Q(c);N_GUARD,P_SPINB(d)::QAR(A)
    • Q(c);N_SPINS(f),P_SPINB(d),P_SPINS(g)::QAB1(A)
  • Tries
    • Try
      • B(J);CHECK,P_PINS(g),XS(f)
      • Refutation
        • K(e);N_SPINS(g),S_FLIGHT,XB(J)
    • Try
      • R(E);P_PINB(d),XQ(c)
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::QAB1(A)
      • Refutation
        • B(a);N_SPINB(d)
    • Try
      • Q(A);CHECK,XB(d)
      • Refutation
        • Q(c);P_SPINQ(c),XQ(A)
  • Actual
    • S(H);XP(h)
    • Threat
      • S(H)
    • Vars
      • Q(c);N_GUARD,P_SPINB(d)::S(H)
      • Q(c);N_GUARD,P_PINS(H),P_SPINB(d)::QAR(A)
      • Q(c);N_SPINS(f),P_PINS(H),P_SPINB(d),P_SPINS(g)::QAB1(A)
      • B(a);N_GUARD::R1(K),XS(g)
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).