MESON Chess Problem Database

Problem Display
PID: 155708 (nBB5/8/4p3/4N2K/4pk2/2NP1rp1/Q4pP1/8 w - - 0 1)

Bulanov, Vladimir

Fomichev, Evgeny Vasilevich

Problemskak, 2015

nBB5/8/4p3/4N2K/4pk2/2NP1rp1/Q4pP1/8

#2

8 + 7

SOLUTION

  • SOUND
  • Tries
    • 1.Se2+?
      • 1...Kf5
        • 2.Qxe6#
      • 1...Ke3!
    • 1.Sxf3+?
      • 1...Ke3
        • 2.Qd2#
        • 2.Qe2#
      • 1...Kf5
        • 2.Qxe6#
      • 1...e5
        • 2.Sd5#
      • 1...Sc7!
    • 1.Sg4+?
      • 1...Kf5
        • 2.Bxe6#
        • 2.Qd5#
        • 2.Qxe6#
        • 2.Qa5#
        • 2.dxe4#
      • 1...e5
        • 2.Se2#
        • 2.Sd5#
        • 2.Bxe5#
        • 2.Qf7#
      • 1...Sc7!
    • 1.Sc6+?
      • 1...Ke3
        • 2.Qe2#
      • 1...Kf5
        • 2.Qxe6#
      • 1...e5
        • 2.Sd5#
      • 1...Sc7!
    • 1.Sg6+?
      • 1...Kf5
        • 2.Qxe6#
      • 1...Ke3!
    • 1.Qe2?
      • threat
        • 2.Qxe4#
      • 1...exd3
        • 2.Qxf3#
        • 2.Qe4#
      • 1...Re3
        • 2.Qg4#
      • 1...e3
        • 2.Qxf3#
      • 1...Kf5!
  • Keys
    • 1.Qd5!
      • threat
        • 2.Qxe4#
      • 1...Ke3
        • 2.Sc4#
      • 1...Kf5
        • 2.Sg4#
      • 1...exd3
        • 2.Qxf3#
        • 2.Qe4#
      • 1...exd5
        • 2.Sxd5#
      • 1...Re3
        • 2.Sg6#
      • 1...e3
        • 2.Sg6#
        • 2.Qxf3#
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINP(f)::QAB1(A),XP(f)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • S(E);CHECK,XR(b)
      • Vars
        • K(e);P-FLIGHT,P_SPINP(f)::QAB1(A),XP(f)
        • P(f);P_SPINP(f)::S(C)
      • Refutation
        • S(g);P_SPINS(g)
    • Try
      • S(E);CHECK
      • Refutation
        • S(g);P_SPINS(g)
    • Try
      • S(E);CHECK
      • Vars
        • K(e);S_FLIGHT::QAR1(A)
        • K(e);P-FLIGHT,P_SPINP(f)::QAB1(A),XP(f)
        • P(f);P_SPINP(f)::S(C)
      • Refutation
        • S(g);P_SPINS(g)
    • Try
      • S(E);CHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINP(f)::QAB1(A),XP(f)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XP(d)
      • Vars
        • R(b);OGATE,SBLOCK::QAR1(A)
        • P(d);N_GUARD::QAR1(A),XR(b)
      • Refutation
        • K(e);P-FLIGHT,P_SPINP(f)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A),XP(d)
    • Vars
      • K(e);S_FLIGHT::S(E)
      • K(e);P-FLIGHT,P_SPINP(f)::QAR(A)+S(E)
      • P(f);XQ(A)::S(C),XP(f)
      • R(b);SBLOCK::B(G)+S(E),DCHECK
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