MESON Chess Problem Database

Problem Display
PID: 165631 (6B1/8/K7/B1pp4/pR2p1N1/3kP3/1P1b4/3Q2n1 w - - 0 1)

Tkachenko, Sergiy Ivanovich

Probleemblad, 2017

6B1/8/K7/B1pp4/pR2p1N1/3kP3/1P1b4/3Q2n1

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Se2
      • 2.Qb1#
    • 1...d4
      • 2.Bc4#
  • Tries
    • 1.Bxd5?
      • threat
        • 2.Bc4#
        • 2.Bxe4#
      • 1...c4
        • 2.Bxc4#
      • 1...cxb4!
    • 1.Rb3+?
      • 1...Kc4
        • 2.Se5#
      • 1...axb3!
    • 1.Rxe4?
      • threat
        • 2.Sf2#
      • 1...Kxe4
        • 2.Bh7#
      • 1...dxe4
        • 2.Qxd2#
      • 1...Sh3!
    • 1.Qf1+?
      • 1...Se2
        • 2.Qb1#
      • 1...Kc2!
  • Keys
    • 1.Rc4!
      • threat
        • 2.Rc3#
      • 1...Kxc4
        • 2.Se5#
      • 1...dxc4
        • 2.Qxd2#
      • 1...Se2
        • 2.Qc2#
      • 1...d4
        • 2.Qxd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(a);SBLOCK::QAB(A)
    • P(g);OGATE::B(H)
  • Tries
    • Try
      • B(H);XP(g)
      • Threat
        • DUALS(2)
      • Vars
        • P(f);::B(H),XP(f)
      • Refutation
        • P(f);XR(D)
    • Try
      • R(D);CHECK
      • Vars
        • K(c);N_SPINB(b),P_SPINP(g),S_FLIGHT::S(E)
      • Refutation
        • P(d);XR(D)
    • Try
      • R(D);XP(e)
      • Threat
        • S(E)
      • Vars
        • K(c);N_SPINB(b),OGATEB,S_FLIGHT,XR(D)::B(H)
        • P(g);SBLOCK,XR(D)::QAR1(A),XB(b)
      • Refutation
        • S(a);
    • Try
      • Q(A);CHECK,N_PINB(b)
      • Vars
        • S(a);P_SPINS(a),SBLOCK::QAB(A)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • R(D);
    • Threat
      • R1(D)
    • Vars
      • K(c);N_SPINB(b),P_SPINP(g),S_FLIGHT,XR(D)::S(E)
      • P(g);XR(D)::QAR1(A),XB(b)
      • S(a);SBLOCK::QAB1(A)
      • P(g);::QAR1(A),XB(b)
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