MESON Chess Problem Database

Problem Display
PID: 173943 (8/8/8/6Kn/5N2/2P2kB1/8/2Q2B2 w - - 0 1)

Shmatov, Vladimir Afanasievich

Sachmatija, 2013

8/8/8/6Kn/5N2/2P2kB1/8/2Q2B2

#2

6 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Sxf4
      • 2.Qxf4#
  • Tries
    • 1.Se2?
      • 1...Sxg3
        • 2.Qf4#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sf6
        • 2.Qf4#
      • 1...Sg7
        • 2.Qf4#
      • 1...Ke4!
    • 1.Be2+?
      • 1...Kxg3
        • 2.Qg1#
      • 1...Ke4!
    • 1.Be1?
      • threat
        • 2.Bg2#
      • 1...Sxf4
        • 2.Qxf4#
      • 1...Ke4!
    • 1.Bf2?
      • threat
        • 2.Qe3#
      • 1...Ke4
        • 2.Qe3#
      • 1...Kxf2!
    • 1.Qd1+?
      • 1...Ke3
        • 2.Qe2#
        • 2.Qd3#
      • 1...Ke4
        • 2.Qe2#
      • 1...Kxg3!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Qd3#
      • 1...Kxg3
        • 2.Qg2#
      • 1...Ke4
        • 2.Qe2#
      • 1...Sxg3
        • 2.Bg2#
      • 1...Sxf4
        • 2.Qxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(b);OGATE,XS(E)::QAR1(A),XS(b)
  • Tries
    • Try
      • S(E);
      • Vars
        • S(b);N_GUARD,XB(D)::QAR1(A)
        • S(b);N_GUARD::QAR1(A),XS(b)
        • S(b);N_GUARD::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(B);CHECK
      • Vars
        • K(a);P-FLIGHT,XB(D)::QAR2(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(D);
      • Threat
        • B(B)
      • Vars
        • S(b);OGATE,XS(E)::QAR1(A),XS(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(D);
      • Threat
        • QAR1(A)
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT,XB(D)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT,XB(D)
  • Actual
    • Q(A);
    • Threat
      • QAR2(A)
    • Vars
      • K(a);P-FLIGHT,XB(D)::QAR1(A)
      • K(a);S_FLIGHT::QAR2(A)
      • S(b);SBLOCK,XB(D)::B(B)
      • S(b);OGATE,XS(E)::QAR1(A),XS(b)
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