MESON Chess Problem Database

Problem Display
PID: 196712 (q2n1B2/5p1B/2pp3p/7r/1Ppk4/r1N2Q1n/p3R3/Kb2N1b1 w - - 0 1)

Ellerman, Arnoldo

2nd Prize, Queensland Chess Association, 1919

q2n1B2/5p1B/2pp3p/7r/1Ppk4/r1N2Q1n/p3R3/Kb2N1b1

#2

8 + 14

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rh4
      • 2.Qf6#
    • 1...Bc2
      • 2.Sxc2#
    • 1...Be4
      • 2.Rxe4#
    • 1...Bh2
      • 2.Qe3#
    • 1...Be3
      • 2.Qxe3#
    • 1...Sf2
      • 2.Qe3#
    • 1...Sg5
      • 2.Qf6#
    • 1...c5
      • 2.Sb5#
    • 1...d5
      • 2.Bc5#
    • 1...f5
      • 2.Bg7#
  • Keys
    • 1.Bc2!
      • threat
        • 2.Re4#
      • 1...Rxc3
        • 2.Qe4#
      • 1...Bxc2
        • 2.Sxc2#
      • 1...Be3
        • 2.Qxe3#
      • 1...Rh4
        • 2.Qf6#
      • 1...Re5
        • 2.Rd2#
      • 1...Sf2
        • 2.Qe3#
      • 1...Sg5
        • 2.Qf6#
      • 1...c5
        • 2.Sb5#
      • 1...d5
        • 2.Bc5#
      • 1...f5
        • 2.Bg7#

This is a version of 166410

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(h);N_GUARD::QAB(E)
    • B(a);N_GUARD::S(B),XB(a)
    • B(a);N_GUARD::R1(C),XB(a)
    • B(b);N_GUARD::QAB1(E)
    • B(b);N_GUARD::QAB1(E),XB(b)
    • S(e);S_CUTB(b)::QAB1(E)
    • S(e);S_CUTR(h)::QAB(E)
    • P(i);N_GUARD,S_CUTR(h)::S(D)
    • P(j);OGATE::B(H)
    • P(l);N_GUARD,S_CUTR(h)::B(H)
  • Actual
    • B(G);
    • Threat
      • R1(C)
    • Vars
      • R(d);SBLOCK,XS(D)::QAR1(E)
      • B(a);XB(G)::S(B),XB(a)
      • B(b);N_GUARD::QAB1(E),XB(b)
      • R(h);N_GUARD::QAB(E)
      • R(h);SBLOCK::R(C)
      • S(e);S_CUTB(b)::QAB1(E)
      • S(e);S_CUTR(h)::QAB(E)
      • P(i);N_GUARD,S_CUTR(h)::S(D)
      • P(j);OGATE::B(H)
      • P(l);N_GUARD,S_CUTR(h)::B(H)
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