MESON Chess Problem Database

Problem Display
PID: 156455 (K3R3/b5B1/3p1p2/N1Pk4/N4P2/3r4/5Q2/3r4 w - - 0 1)

Lukashev, Viktor Sergeevich

Best Problems, 2006

K3R3/b5B1/3p1p2/N1Pk4/N4P2/3r4/5Q2/3r4

#2

8 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rd2
      • 2.Sc3#
    • 1...Rc3
      • 2.Sxc3#
    • 1...Bb6
      • 2.Sxb6#
    • 1...Bb8
      • 2.Sb6#
  • Tries
    • 1.Qe3?
      • threat
        • 2.Qe4#
      • 1...dxc5
        • 2.Rd8#
      • 1...Re1
        • 2.Qxd3#
      • 1...Rd4
        • 2.Qe6#
      • 1...f5
        • 2.Qe6#
      • 1...Rxe3!
    • 1.Qa2+?
      • 1...Kd4
        • 2.Sc6#
        • 2.Bxf6#
        • 2.Qc4#
      • 1...Rb3!
    • 1.Qc2?
      • threat
        • 2.Qc4#
      • 1...Kd4
        • 2.Qc4#
      • 1...Rc1
        • 2.Qxd3#
      • 1...Rc3
        • 2.Qe4#
      • 1...Rd4
        • 2.Qf5#
      • 1...dxc5!
    • 1.Qg2+?
      • 1...Kd4
        • 2.Bxf6#
        • 2.Qe4#
      • 1...Rf3!
    • 1.Qf3+?
      • 1...Kd4
        • 2.Bxf6#
        • 2.Qe4#
      • 1...Rxf3!
  • Keys
    • 1.Qe2!
      • threat
        • 2.Qe4#
      • 1...Kd4
        • 2.Qe4#
      • 1...dxc5
        • 2.Rd8#
      • 1...Re1
        • 2.Qxd3#
      • 1...Re3
        • 2.Qc4#
      • 1...Rd4
        • 2.Qe6#
      • 1...f5
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 4
  • Sets
    • R(b);N_GUARD::S(B)
    • R(b);N_GUARD::S(B),XR(b)
    • B(f);N_GUARD::S(B),XB(f)
    • B(f);N_GUARD::S(B)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • P(d);OGATEB,XP(E)::R(H)
        • R(a);N_GUARD::QAR2(A),XR(b)
        • R(b);SBLOCK::QAB1(A)
        • P(e);::QAB1(A)
      • Refutation
        • R(b);XQ(A)
    • Try
      • Q(A);CHECK
      • Refutation
        • R(b);P_SPINR(b)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • K(c);P-FLIGHT,P_SPINP(e)::QAR1(A)
        • R(a);N_GUARD::QAR2(A),XR(b)
        • R(b);OGATE::QAB1(A)
        • R(b);OGATE,SBLOCK::QAR2(A)
      • Refutation
        • P(d);XP(E)
    • Try
      • Q(A);CHECK
      • Refutation
        • R(b);P_SPINR(b)
    • Try
      • Q(A);CHECK
      • Refutation
        • R(b);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • K(c);P-FLIGHT,P_SPINP(e)::QAR1(A)
      • P(d);OGATEB,XP(E)::R(H)
      • R(a);N_GUARD::QAR2(A),XR(b)
      • R(b);OGATE::QAB1(A)
      • R(b);SBLOCK::QAB1(A)
      • P(e);::QAB1(A)
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