MESON Chess Problem Database

Problem Display
PID: 216110 (8/1p1Q4/2p5/2B5/1N2n3/2P5/2Kn4/k1N5 w - - 0 1)

Akimov, Nikolai Nikolaevich

Sachmatija, 2020

8/1p1Q4/2p5/2B5/1N2n3/2P5/2Kn4/k1N5

#2

6 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Sb1
      • 2.Sb3#
    • 1...Sf1
      • 2.Sb3#
    • 1...Sb3
      • 2.Sxb3#
    • 1...Sf3
      • 2.Sb3#
    • 1...Sc4
      • 2.Sb3#
    • 1...b5
      • 2.Qa7#
    • 1...b6
      • 2.Qa7#
  • Tries
    • 1.Qe6?
      • threat
        • 2.Qa2#
      • 1...Sb3
        • 2.Sxb3#
      • 1...Sc4
        • 2.Sb3#
      • 1...Sxc3!
    • 1.Qf7?
      • threat
        • 2.Qa2#
      • 1...Sb3
        • 2.Sxb3#
      • 1...Sc4
        • 2.Sb3#
      • 1...Sxc3!
    • 1.Qg7?
      • 1...Sxc3
        • 2.Qxc3#
      • 1...Sxc5
        • 2.c4#
      • 1...Sf2
        • 2.c4#
      • 1...Sb1
        • 2.Sb3#
      • 1...Sf1
        • 2.Sb3#
      • 1...Sb3
        • 2.Sxb3#
      • 1...Sf3
        • 2.Sb3#
      • 1...Sc4
        • 2.Sb3#
      • 1...Sg3
        • 2.c4#
      • 1...Sg5
        • 2.c4#
      • 1...Sd6
        • 2.c4#
      • 1...b5
        • 2.Qa7#
      • 1...b6
        • 2.Qa7#
      • 1...Sf6!
    • 1.c4?
      • 1...Sxc4
        • 2.Sb3#
      • 1...Sxc5
        • 2.Qd4#
        • 2.Qg7#
      • 1...Sf2
        • 2.Bd4#
        • 2.Qd4#
        • 2.Qg7#
      • 1...Sb1
        • 2.Sb3#
      • 1...Sf1
        • 2.Sb3#
      • 1...Sb3
        • 2.Sxb3#
      • 1...Sf3
        • 2.Sb3#
      • 1...Sg3
        • 2.Bd4#
        • 2.Qd4#
        • 2.Qg7#
      • 1...Sg5
        • 2.Bd4#
        • 2.Qd4#
        • 2.Qg7#
      • 1...Sd6
        • 2.Bd4#
        • 2.Qg7#
      • 1...Sf6
        • 2.Bd4#
        • 2.Qd4#
      • 1...b5
        • 2.Qa7#
      • 1...b6
        • 2.Qa7#
      • 1...Sc3!
  • Keys
    • 1.Bd4!
      • 1...Sxc3
        • 2.Bxc3#
      • 1...Sf2
        • 2.c4#
      • 1...Sb1
        • 2.Sb3#
      • 1...Sf1
        • 2.Sb3#
      • 1...Sb3
        • 2.Sxb3#
      • 1...Sf3
        • 2.Sb3#
      • 1...Sc4
        • 2.Sb3#
      • 1...Sg3
        • 2.c4#
      • 1...Sc5
        • 2.c4#
      • 1...Sg5
        • 2.c4#
      • 1...Sd6
        • 2.c4#
      • 1...Sf6
        • 2.c4#
      • 1...c5
        • 2.Qa4#
      • 1...b5
        • 2.Qa7#
      • 1...b6
        • 2.Qa7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD::S(A)
    • S(b);N_GUARD::S(A),XS(b)
    • P(e);OGATE::QAR(F)
  • Tries
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • S(b);N_GUARD::S(A),XS(b)
        • S(b);N_GUARD::S(A)
      • Refutation
        • S(c);XP(C)
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • S(b);N_GUARD::S(A),XS(b)
        • S(b);N_GUARD::S(A)
      • Refutation
        • S(c);XP(C)
    • Try
      • Q(F);
      • Vars
        • S(c);OGATE,P_SPINS(c),XP(C)::QAB(F),XS(c)
        • S(c);N_GUARD,XB(E)::QAB(F)+P(C)
        • S(c);N_GUARD::QAB(F)+P(C)
        • S(b);N_GUARD::S(A)
        • S(b);N_GUARD::S(A),XS(b)
        • P(e);OGATE::QAR(F)
      • Refutation
        • S(c);
    • Try
      • P(C);
      • Vars
        • S(b);N_GUARD,XP(C)::S(A)
        • S(b);N_GUARD::S(A)
        • S(b);N_GUARD::S(A),XS(b)
        • P(e);OGATE::QAR(F)
      • Refutation
        • S(c);
  • Actual
    • B(E);
    • Vars
      • S(c);OGATE,P_SPINS(c),XP(C)::B(E),XS(c)
      • S(c);N_GUARD::B(E)+P(C)
      • S(b);N_GUARD::S(A)
      • S(b);N_GUARD::S(A),XS(b)
      • P(d);OGATE::QAR(F)
      • P(e);OGATE::QAR(F)
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