MESON Chess Problem Database

Problem Display
PID: 66614 (6K1/3p4/Q2B3b/1ppk2NR/1r3p2/2r1p2n/b2N4/3R1B2 w - - 0 1)

Neumann, Itzhak

Magyar Sakkvilag, 1937

6K1/3p4/Q2B3b/1ppk2NR/1r3p2/2r1p2n/b2N4/3R1B2

#2

8 + 11

5828 My Selected Chess Problems (Neumann) 1968

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4+
      • 2.Sb3#
    • 1...Rcc4
      • 2.Sxc4#
  • Tries
    • 1.Sb1+?
      • 1...Rd4
        • 2.Sxc3#
      • 1...Rd3!
    • 1.Sde4+?
      • 1...Rd4
        • 2.Sxc3#
        • 2.Sf6#
        • 2.Qb7#
        • 2.Qa8#
      • 1...Rd3!
    • 1.Bc7?
      • threat
        • 2.Qd6#
      • 1...Kd4+
        • 2.Sb3#
      • 1...d6
        • 2.Qxd6#
      • 1...Bf8!
    • 1.Bb8?
      • threat
        • 2.Qd6#
      • 1...Kd4+
        • 2.Sb3#
      • 1...d6
        • 2.Qxd6#
      • 1...Bf8!
    • 1.Qb7+?
      • 1...Kd4+
        • 2.Sb3#
      • 1...Kxd6+!
    • 1.Qa8+?
      • 1...Kd4+
        • 2.Sb3#
      • 1...Kxd6+!
  • Keys
    • 1.Bxc5!
      • threat
        • 2.Qd6#
      • 1...Kxc5+
        • 2.Se6#
      • 1...Ke5+
        • 2.Sf7#
      • 1...Rxc5
        • 2.Sc4#
      • 1...Bf8
        • 2.Sxh3#
      • 1...d6
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • K(i);CHECK,P-FLIGHT::R(A)+S(C),DCHECK
    • R(b);N_GUARD::R(A)+S(C),XR(b)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • R(e);P_SPINR(e)::S(C),XR(b)
      • Refutation
        • R(b);P_SPINR(b)
    • Try
      • S(C);CHECK
      • Refutation
        • R(b);P_SPINR(b)
    • Try
      • B(G);
      • Threat
        • QAR1(F)
      • Vars
        • K(i);CHECK,P-FLIGHT::R(A)+S(C),DCHECK
        • P(k);::QAR1(F),XP(k)
      • Refutation
        • B(j);
    • Try
      • B(G);
      • Threat
        • QAR1(F)
      • Vars
        • K(i);CHECK,P-FLIGHT::R(A)+S(C),DCHECK
        • P(k);::QAR1(F),XP(k)
      • Refutation
        • B(j);
    • Try
      • Q(F);CHECK
      • Vars
        • K(i);CHECK,P-FLIGHT::R(A)+S(C),DCHECK
      • Refutation
        • K(i);CHECK,P-FLIGHT,XB(G)
    • Try
      • Q(F);CHECK
      • Vars
        • K(i);CHECK,P-FLIGHT::R(A)+S(C),DCHECK
      • Refutation
        • K(i);CHECK,P-FLIGHT,XB(G)
  • Actual
    • B(G);XP(h)
    • Threat
      • QAR1(F)
    • Vars
      • K(i);CHECK,P-FLIGHT,XB(G)::R(E)+S(D),DCHECK
      • K(i);CHECK,P-FLIGHT::R(E)+S(D),DCHECK
      • R(b);N_GUARD,SBLOCK,XB(G)::R(A)+S(C)
      • B(j);N_GUARD::R(E)+S(D),XS(d)
      • P(k);::QAR1(F),XP(k)
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).