MESON Chess Problem Database

Problem Display
PID: 268779 (3r2n1/5N2/3p4/8/N1Pkbp1R/1P1p4/3Q1P2/2Kn4 w - - 0 1)

Armeni, Alberto

Problemas, 2020

3r2n1/5N2/3p4/8/N1Pkbp1R/1P1p4/3Q1P2/2Kn4

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.Qc3#
      • 2.Qxb2#
    • 1...Sxf2
      • 2.Qxf2#
    • 1...Sc3
      • 2.Qxc3#
    • 1...Se3
      • 2.Qc3#
      • 2.Qb2#
  • Tries
    • 1.Kxd1?
      • threat
        • 2.Qc3#
        • 2.Qb2#
      • 1...Bh1
        • 2.Qe3#
      • 1...Bg2
        • 2.Qe3#
      • 1...Bd5
        • 2.Qe3#
      • 1...Bf5
        • 2.Qe3#
      • 1...Bc6
        • 2.Qe3#
      • 1...Bg6
        • 2.Qe3#
      • 1...Bb7
        • 2.Qe3#
      • 1...Bh7
        • 2.Qe3#
      • 1...Ba8
        • 2.Qe3#
      • 1...Bf3+!
    • 1.Qb2+?
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sxb2!
  • Keys
    • 1.Qxf4!
      • threat
        • 2.Qxe4#
      • 1...d2+
        • 2.Qxd2#
      • 1...Sxf2
        • 2.Qxf2#
      • 1...Re8
        • 2.Qxd6#
      • 1...Sc3
        • 2.Qe3#
      • 1...Sf6
        • 2.Qxf6#
      • 1...d5
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(a);OGATE,XP(C)::QAB(B),XS(a)
    • S(a);N_GUARD::QAB1(B),XS(a)
  • Tries
    • Try
      • K(A);P-FLIGHT,XS(a)
      • Threat
        • DUALS(2)
      • Vars
        • B(d);S_CUTP(e)::QAB1(B)
      • Refutation
        • B(d);CHECK
    • Try
      • Q(B);CHECK,N_PINP(b)
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB1(B),XS(a)
      • Refutation
        • S(a);XQ(B)
  • Actual
    • Q(B);N_PINP(b),P_PINB(d),XP(e)
    • Threat
      • QAR1(B),XB(d)
    • Vars
      • P(b);CHECK,OGATEB::QAR2(B),XP(b)
      • S(a);OGATE,XP(C)::QAB(B),XS(a)
      • R(g);N_GUARD::QAR2(B),XP(f)
      • S(a);N_GUARD::QAB1(B)
      • S(h);N_GUARD::QAB(B),XS(h)
      • P(f);N_GUARD::QAB1(B)
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