MESON Chess Problem Database

Problem Display
PID: 83632 (N1r1B2n/B1pN3K/R4p2/3k1Pp1/3pn1P1/8/3bQ3/8 w - - 0 1)

Ellerman, Arnoldo

Western Morning News, 1934

N1r1B2n/B1pN3K/R4p2/3k1Pp1/3pn1P1/8/3bQ3/8

#2

9 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rb8
      • 2.Sxc7#
    • 1...Rd8
      • 2.Sxc7#
    • 1...Rxe8
      • 2.Sxc7#
    • 1...Bc1
      • 2.Qa2#
    • 1...Be1
      • 2.Qa2#
    • 1...Bc3
      • 2.Qa2#
    • 1...Be3
      • 2.Qa2#
    • 1...Bb4
      • 2.Qa2#
    • 1...Bf4
      • 2.Qa2#
    • 1...Ba5
      • 2.Qa2#
    • 1...Sf2
      • 2.Sxf6#
      • 2.Qe6#
    • 1...Sc3
      • 2.Sxf6#
      • 2.Qe6#
    • 1...Sg3
      • 2.Sxf6#
      • 2.Qe6#
    • 1...Sc5
      • 2.Sxf6#
    • 1...Sd6
      • 2.Sxf6#
      • 2.Qe6#
    • 1...Sg6
      • 2.Bf7#
    • 1...Sf7
      • 2.Bxf7#
    • 1...d3
      • 2.Qxd3#
  • Tries
    • 1.Sxf6+?
      • 1...Ke5
        • 2.Qxe4#
      • 1...Sxf6+!
    • 1.Bc5?
      • 1...Rxe8
        • 2.Sxc7#
      • 1...Sxc5
        • 2.Sxf6#
      • 1...d3
        • 2.Qxd3#
      • 1...Rb8
        • 2.Sxc7#
      • 1...Rd8
        • 2.Sxc7#
      • 1...Bc1
        • 2.Qa2#
      • 1...Be1
        • 2.Qa2#
      • 1...Bc3
        • 2.Qa2#
      • 1...Be3
        • 2.Qa2#
      • 1...Bb4
        • 2.Qa2#
      • 1...Bf4
        • 2.Qa2#
      • 1...Ba5
        • 2.Qa2#
      • 1...Sf2
        • 2.Qe6#
      • 1...Sc3
        • 2.Qe6#
      • 1...Sg3
        • 2.Qe6#
      • 1...Sd6
        • 2.Qe6#
      • 1...Sg6
        • 2.Bf7#
      • 1...Sf7
        • 2.Bxf7#
      • 1...c6
        • 2.Sab6#
      • 1...Rxa8!
  • Keys
    • 1.Bb8!
      • 1...Rxb8
        • 2.Sxc7#
      • 1...Rxe8
        • 2.Sxc7#
      • 1...d3
        • 2.Qxd3#
      • 1...Rd8
        • 2.Sxc7#
      • 1...Bc1
        • 2.Qa2#
      • 1...Be1
        • 2.Qa2#
      • 1...Bc3
        • 2.Qa2#
      • 1...Be3
        • 2.Qa2#
      • 1...Bb4
        • 2.Qa2#
      • 1...Bf4
        • 2.Qa2#
      • 1...Ba5
        • 2.Qa2#
      • 1...Sf2
        • 2.Qe6#
      • 1...Sc3
        • 2.Qe6#
      • 1...Sg3
        • 2.Qe6#
      • 1...Sc5
        • 2.Sxf6#
      • 1...Sd6
        • 2.Qe6#
      • 1...Sg6
        • 2.Bf7#
      • 1...Sf7
        • 2.Bxf7#
      • 1...c5
        • 2.Sdb6#
      • 1...c6
        • 2.Sab6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • R(h);N_GUARD::S(H),XP(g)
    • R(h);N_GUARD,XB(I)::S(H),XP(g)
    • B(a);OGATE::QAB(A)
    • S(c);N_GUARD::S(F),XP(f)
    • S(i);N_GUARD::B(I)
    • S(i);N_GUARD::B(I),XS(i)
    • P(b);OGATEB::QAR2(A),XP(b)
  • Tries
    • Try
      • S(F);CHECK,XP(f)
      • Vars
        • K(d);P-FLIGHT,P_SPINS(c)::QAR1(A),XS(c)
      • Refutation
        • S(c);CHECK,XS(F)
    • Try
      • B(E);
      • Vars
        • R(h);N_GUARD,XB(I)::S(H),XP(g)
        • S(c);N_GUARD,SBLOCK,XB(E)::S(F),XP(f)
        • P(b);OGATEB::QAR2(A),XP(b)
        • R(h);N_GUARD::S(H),XP(g)
        • B(a);OGATE::QAB(A)
        • S(c);OGATE::QAB1(A)
        • S(i);N_GUARD::B(I)
        • S(i);N_GUARD::B(I),XS(i)
        • P(g);N_GUARD,SBLOCK::S(H)
      • Refutation
        • R(h);XS(H)
  • Actual
    • B(E);
    • Vars
      • R(h);N_GUARD,XB(E)::S(H),XP(g)
      • R(h);N_GUARD,XB(I)::S(H),XP(g)
      • P(b);OGATEB::QAR2(A),XP(b)
      • R(h);N_GUARD::S(H),XP(g)
      • B(a);OGATE::QAB(A)
      • S(c);OGATE::QAB1(A)
      • S(c);N_GUARD,SBLOCK::S(F),XP(f)
      • S(i);N_GUARD::B(I)
      • S(i);N_GUARD::B(I),XS(i)
      • P(g);N_GUARD,SBLOCK::S(F)
      • P(g);N_GUARD,SBLOCK::S(H)
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