MESON Chess Problem Database

Problem Display
PID: 18226 (K3b2n/1p6/5N2/2b2NRp/p4k1p/n3p1R1/q7/Q7 w - - 0 1)

Ellerman, Arnoldo

3rd Prize, Magasinet, 1954

K3b2n/1p6/5N2/2b2NRp/p4k1p/n3p1R1/q7/Q7

#2

6 + 11

3105 FIDE Album (1945-1955) 1964

SOLUTION

  • SOUND
  • Sets
    • 1...Bb4
      • 2.Qd4#
    • 1...Bd4
      • 2.Qxd4#
    • 1...Bd6
      • 2.Qd4#
    • 1...Be7
      • 2.Qd4#
    • 1...Bf8
      • 2.Qd4#
  • Tries
    • 1.Se7?
      • threat
        • 2.Qe5#
      • 1...Qxa1
        • 2.Sed5#
      • 1...hxg3
        • 2.Rf5#
      • 1...Qd5
        • 2.Sexd5#
      • 1...Qe6
        • 2.Qf1#
      • 1...Qb2
        • 2.Sed5#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Bd6
        • 2.Qd4#
      • 1...Sc4
        • 2.Sed5#
      • 1...Sf7
        • 2.Sg6#
      • 1...Sg6!
    • 1.Sg7?
      • threat
        • 2.Qe5#
      • 1...Qxa1
        • 2.Se6#
      • 1...hxg3
        • 2.Rf5#
      • 1...Sg6
        • 2.Sgxh5#
      • 1...Qe6
        • 2.Sxe6#
        • 2.Qf1#
      • 1...Qb2
        • 2.Se6#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Bd6
        • 2.Qd4#
      • 1...Sc4
        • 2.Se6#
      • 1...Sf7
        • 2.Sgxh5#
      • 1...Qd5!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Qe5#
      • 1...Qxa1
        • 2.Sd5#
      • 1...Bxd6
        • 2.Qd4#
      • 1...hxg3
        • 2.Rf5#
      • 1...Qd5
        • 2.Sxd5#
      • 1...Qe6
        • 2.Qf1#
      • 1...Qb2
        • 2.Sd5#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Sc4
        • 2.Sd5#
      • 1...Sg6
        • 2.Sxh5#
      • 1...Sf7
        • 2.Sxh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 3
  • Sets
    • B(g);N_GUARD::QAR2(A)
    • B(g);N_GUARD::QAR2(A),XB(g)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAB1(A)
      • Vars
        • Q(a);N_GUARD,XQ(A)::S(C)
        • P(f);SBLOCK,XR(B)::R1(D)
        • Q(a);N_GUARD::S(C),XQ(a)
        • Q(a);N_GUARD::QAR(A)
        • Q(a);N_GUARD::S(C)
        • B(g);N_GUARD::QAR2(A),XB(g)
        • B(g);N_GUARD::QAR2(A)
        • S(b);S_CUTQ(a)::S(C)
        • S(k);N_GUARD,S_CUTB(j)::S(C)
      • Refutation
        • S(k);
    • Try
      • S(C);
      • Threat
        • QAB1(A)
      • Vars
        • Q(a);N_GUARD,XQ(A)::S(C)
        • P(f);SBLOCK,XR(B)::R1(D)
        • S(k);S_CUTB(j)::S(C),XP(h)
        • Q(a);N_GUARD::S(C)
        • B(g);N_GUARD::QAR2(A),XB(g)
        • B(g);N_GUARD::QAR2(A)
        • S(b);S_CUTQ(a)::S(C)
      • Refutation
        • Q(a);
  • Actual
    • S(C);
    • Threat
      • QAB1(A)
    • Vars
      • Q(a);N_GUARD,XQ(A)::S(E)
      • B(g);N_GUARD,XS(C)::QAR2(A)
      • P(f);SBLOCK,XR(B)::R1(D)
      • Q(a);N_GUARD::S(E),XQ(a)
      • Q(a);N_GUARD::QAR(A)
      • Q(a);N_GUARD::S(E)
      • B(g);N_GUARD::QAR2(A),XB(g)
      • S(b);S_CUTQ(a)::S(E)
      • S(k);S_CUTB(j)::S(E),XP(h)
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