MESON Chess Problem Database

Problem Display
PID: 64329 (n1b5/Q3Np2/rnR5/p1q2p2/p1Pk1N2/4RP2/5P1K/b1B2B2 w - - 0 1)

Wrobel, Marian

Chess, 1946

n1b5/Q3Np2/rnR5/p1q2p2/p1Pk1N2/4RP2/5P1K/b1B2B2

#2

11 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qa3
      • 2.Se2#
    • 1...Qb4
      • 2.Se2#
    • 1...Qxe7
      • 2.Se2#
    • 1...Qxc4
      • 2.Rxc4#
    • 1...Qb5
      • 2.Se2#
    • 1...Qd5
      • 2.Se2#
    • 1...Qe5
      • 2.Rd3#
    • 1...Bb2
      • 2.Bxb2#
    • 1...Sxc4
      • 2.Se2#
      • 2.Qxc5#
    • 1...Sd5
      • 2.Qxc5#
    • 1...Sd7
      • 2.Sxf5#
  • Tries
    • 1.Sxf5+?
      • 1...Qxf5
        • 2.Se2#
      • 1...Bxf5!
    • 1.Rd6+?
      • 1...Qd5
        • 2.Rxd5#
      • 1...Sd5
        • 2.Rxd5#
      • 1...Qxd6!
  • Keys
    • 1.Ba3!
      • threat
        • 2.Bxc5#
      • 1...Qxa3
        • 2.Se2#
      • 1...Qxe7
        • 2.Se2#
      • 1...Qxc4
        • 2.Rxc4#
      • 1...Qxc6
        • 2.Sxc6#
      • 1...Qb4
        • 2.Se2#
      • 1...Qd6
        • 2.Rxd6#
      • 1...Qb5
        • 2.Se2#
      • 1...Qd5
        • 2.Se2#
      • 1...Qe5
        • 2.Rd3#
      • 1...Sd7
        • 2.Sxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • Q(e);P_SPINS(h)::S(H)
    • Q(e);P_SPINS(h),XS(K)::S(H)
    • Q(e);OGATE,P_SPINS(h),XP(G)::R1(I),XQ(e)
    • Q(e);P_PINS(H),P_SPINS(h),SBLOCK::R1(E)
    • B(a);N_GUARD::B(A),XB(a)
    • S(h);OGATE,P_SPINQ(e)::QAB1(J),XQ(e)
    • S(h);P_SPINQ(e),S_CUTB(k)::S(K),XP(f)
  • Tries
    • Try
      • S(K);CHECK,XP(f)
      • Vars
        • Q(e);P_SPINS(h),XS(K)::S(H)
      • Refutation
        • B(k);XS(K)
    • Try
      • R(I);CHECK
      • Vars
        • Q(e);N_GUARD,P_SPINQ(e),P_SPINS(h)::R1(I),XQ(e)
        • S(h);N_GUARD,P_SPINQ(e),P_SPINS(h)::R1(I),XS(h)
      • Refutation
        • Q(e);P_PINS(H),P_SPINS(h),XR(I)
  • Actual
    • B(A);
    • Threat
      • B(A),XQ(e)
    • Vars
      • Q(e);P_SPINS(h),XB(A)::S(H)
      • Q(e);P_SPINS(h),XS(K)::S(H)
      • Q(e);OGATE,P_SPINS(h),XP(G)::R1(I),XQ(e)
      • Q(e);P_SPINS(h),XR(I)::S(K),XQ(e)
      • Q(e);P_SPINS(h)::S(H)
      • Q(e);N_GUARD,P_PINS(H),P_SPINS(h)::R(I),XQ(e)
      • Q(e);P_PINS(H),P_SPINS(h),SBLOCK::R1(E)
      • S(h);P_SPINQ(e),S_CUTB(k)::S(K),XP(f)
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).