MESON Chess Problem Database

Problem Display
PID: 203708 (4N3/bP2R3/QnPP4/3kp2r/P1pPn3/5R2/4N1B1/Kb6 w - - 0 1)

Witt, Andreas

The Problemist, 2019

4N3/bP2R3/QnPP4/3kp2r/P1pPn3/5R2/4N1B1/Kb6

#2

12 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc6
      • 2.Qb5#
  • Tries
    • 1.Rd3?
      • threat
        • 2.Qb5#
      • 1...Kxc6
        • 2.Bxe4#
        • 2.Qb5#
      • 1...Sd7
        • 2.Sc3#
      • 1...Sa8
        • 2.Sc3#
      • 1...Sc8
        • 2.Sc3#
      • 1...Sxa4!
    • 1.Rf5?
      • threat
        • 2.Qb5#
      • 1...Kxc6
        • 2.Qb5#
      • 1...Sxa4
        • 2.Rexe5#
      • 1...Sa8
        • 2.Rexe5#
      • 1...Sc8
        • 2.Rexe5#
      • 1...Sd7!
    • 1.Rf6?
      • threat
        • 2.Qb5#
      • 1...Kxc6
        • 2.Qb5#
      • 1...Sxa4
        • 2.Sc7#
      • 1...Sd7
        • 2.Sc7#
      • 1...Sc8
        • 2.Sc7#
      • 1...Sa8!
    • 1.Qa5+?
      • 1...Kxc6
        • 2.Rc7#
        • 2.Qb5#
      • 1...Sc5!
  • Keys
    • 1.Rc3!
      • threat
        • 2.Qb5#
      • 1...Kxc6
        • 2.Qb5#
      • 1...Sxa4
        • 2.Qxc4#
      • 1...Sd7
        • 2.Qxc4#
      • 1...Sa8
        • 2.Qxc4#
      • 1...Sc8
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(d);P_SPINS(g),S_FLIGHT,XP(H)::QAB1(G)
  • Tries
    • Try
      • R(D);P_PINS(c)
      • Threat
        • QAR2(G)
      • Vars
        • S(g);::S(B)
      • Refutation
        • S(g);XP(E)
    • Try
      • R(D);P_PINP(e),P_PINS(c)
      • Threat
        • QAR2(G)
      • Vars
        • K(d);N_SPINP(e),S_FLIGHT,XP(H)::QAB1(G)
        • S(g);XP(E)::R1(K),XP(e)
        • S(g);::R1(K),XP(e)
      • Refutation
        • S(g);
    • Try
      • R(D);P_PINS(c)
      • Threat
        • QAR2(G)
      • Vars
        • K(d);S_FLIGHT,XP(H)::QAB1(G)
        • S(g);XP(E)::S(L)
        • S(g);::S(L)
      • Refutation
        • S(g);
    • Try
      • Q(G);CHECK
      • Refutation
        • S(c);P_SPINS(c)
  • Actual
    • R(D);P_PINS(c)
    • Threat
      • QAR2(G)
    • Vars
      • K(d);P_SPINP(b),S_FLIGHT,XP(H)::QAB1(G)
      • S(g);N_GUARD,XP(E)::QAB1(G),XP(b)
      • S(g);N_GUARD::QAB1(G),XP(b)
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