MESON Chess Problem Database

Problem Display
PID: 252641 (7K/2Np1Q1B/2n4B/3Pp3/1P1k4/1Pp5/2r5/1nb2b2 w - - 0 1)

Armeni, Alberto

SEPA-80 JT (Problemas), 2013-2014

7K/2Np1Q1B/2n4B/3Pp3/1P1k4/1Pp5/2r5/1nb2b2

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Re2
      • 2.Sb5#
    • 1...Bg2
      • 2.Sb5#
    • 1...Bh3
      • 2.Sb5#
    • 1...Bb5
      • 2.Sxb5#
    • 1...Sd2
      • 2.Qf2#
  • Tries
    • 1.Se6+?
      • 1...Kxd5
        • 2.Qxd7#
      • 1...dxe6!
    • 1.Qf2+?
      • 1...Be3
        • 2.Bxe3#
        • 2.Qxe3#
      • 1...Rxf2!
    • 1.Qf3?
      • threat
        • 2.Qe4#
      • 1...e4
        • 2.Qxe4#
      • 1...Re2
        • 2.Sb5#
        • 2.Qd3#
      • 1...Bg2
        • 2.Sb5#
        • 2.Qd3#
      • 1...Bd3
        • 2.Qxd3#
      • 1...Sd2
        • 2.Be3#
        • 2.Qf2#
        • 2.Qe3#
      • 1...Sxb4!
    • 1.Qf5?
      • threat
        • 2.Qe4#
      • 1...e4
        • 2.Qxe4#
      • 1...Re2
        • 2.Qd3#
      • 1...Bg2
        • 2.Qd3#
      • 1...Bd3
        • 2.Qxd3#
      • 1...Sd2
        • 2.Qf2#
      • 1...Sxb4!
  • Keys
    • 1.Qg6!
      • threat
        • 2.Qe4#
      • 1...Sxb4
        • 2.Qb6#
      • 1...e4
        • 2.Qxe4#
      • 1...Re2
        • 2.Qd3#
      • 1...Bg2
        • 2.Qd3#
      • 1...Bd3
        • 2.Qxd3#
      • 1...Sd2
        • 2.Qg1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(d);S_CUTB(c)::S(E)
    • B(c);N_GUARD::S(E)
    • B(c);N_GUARD::S(E),XB(c)
    • S(a);S_CUTB(b),S_CUTR(d)::QAB(F)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(f);P-FLIGHT,XP(C)::QAR2(F),XP(i)
      • Refutation
        • P(i);XS(E)
    • Try
      • Q(F);CHECK
      • Refutation
        • R(d);XQ(F)
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • P(g);::QAR1(F),XP(g)
        • B(c);N_GUARD::QAR1(F),XB(c)
      • Refutation
        • S(h);XP(B)
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • P(g);::QAR1(F),XP(g)
        • R(d);S_CUTB(c)::QAR1(F)
        • B(c);N_GUARD::QAR1(F)
        • B(c);N_GUARD::QAR1(F),XB(c)
        • S(a);S_CUTB(b),S_CUTR(d)::QAB(F)
      • Refutation
        • S(h);XP(B)
  • Actual
    • Q(F);
    • Threat
      • QAR1(F)
    • Vars
      • S(h);OGATE,XP(B)::QAB(F)
      • P(g);::QAR1(F),XP(g)
      • R(d);S_CUTB(c)::QAR1(F)
      • B(c);N_GUARD::QAR1(F)
      • B(c);N_GUARD::QAR1(F),XB(c)
      • S(a);S_CUTB(b),S_CUTR(d)::QAB(F)
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