MESON Chess Problem Database

Problem Display
PID: 67692 (1B6/K2Bb3/p4N2/1pkpN1Rp/r4Q1r/P2PpP2/2n5/8 w - - 0 1)

Ellerman, Arnoldo

Chess, 1948

1B6/K2Bb3/p4N2/1pkpN1Rp/r4Q1r/P2PpP2/2n5/8

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Sb4
      • 2.d4#
    • 1...d4
      • 2.Sc4#
      • 2.Seg4#
      • 2.Sc6#
      • 2.Sg6#
      • 2.Sf7#
  • Tries
    • 1.Sc6?
      • threat
        • 2.Rxd5#
      • 1...Bxf6
        • 2.Bd6#
        • 2.Qd6#
      • 1...Sb4
        • 2.Se4#
      • 1...Rd4!
    • 1.Sg6?
      • threat
        • 2.Rxd5#
      • 1...Bxf6
        • 2.Bd6#
      • 1...Rd4
        • 2.Qc7#
      • 1...Sb4!
    • 1.Sf7?
      • threat
        • 2.Rxd5#
      • 1...Bxf6
        • 2.Bd6#
      • 1...Rd4
        • 2.Qc7#
      • 1...Sb4!
  • Keys
    • 1.Seg4!
      • threat
        • 2.Rxd5#
      • 1...Bxf6
        • 2.Bd6#
      • 1...Rd4
        • 2.Qc7#
      • 1...Sb4
        • 2.Qxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD,S_CUTR(c)::P(B)
  • Tries
    • Try
      • S(E);P_PINP(g)
      • Threat
        • R1(F),XP(g)
      • Vars
        • S(a);S_CUTR(c)::S(G)
      • Refutation
        • R(c);
    • Try
      • S(E);P_PINP(g)
      • Threat
        • R1(F),XP(g)
      • Vars
        • B(j);N_GUARD,XS(G)::B(J)
        • R(c);SBLOCK::QAR2(D)
      • Refutation
        • S(a);
    • Try
      • S(E);P_PINP(g)
      • Threat
        • R1(F),XP(g)
      • Vars
        • B(j);N_GUARD,XS(G)::B(J)
        • R(c);SBLOCK::QAR2(D)
      • Refutation
        • S(a);
  • Actual
    • S(E);P_PINP(g)
    • Threat
      • R1(F),XP(g)
    • Vars
      • B(j);N_GUARD,XS(G)::B(J)
      • R(c);SBLOCK::QAR2(D)
      • S(a);N_GUARD,S_CUTR(c)::QAB(D),XP(b)
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