MESON Chess Problem Database

Problem Display
PID: 135669 (8/3p2p1/3P2Pp/1p1pN2K/pP1Bk3/Rp6/2r2Q2/1B6 w - - 0 1)

Ancin, Andrej

Zilahi, Zoltan

Nynorsk Vekeblad, 1950

8/3p2p1/3P2Pp/1p1pN2K/pP1Bk3/Rp6/2r2Q2/1B6

#2

9 + 9

14649 Andrej Ancin - Chess Compositions 2008

SOLUTION

  • SOUND
  • Sets
    • 1...b2
      • 2.Bxc2#
  • Tries
    • 1.Kh4?
      • 1...b2
        • 2.Bxc2#
      • 1...h5!
    • 1.Sg4?
      • 1...b2
        • 2.Bxc2#
      • 1...Kd3!
    • 1.Sc6?
      • 1...Kd3
        • 2.Qxc2#
      • 1...b2
        • 2.Bxc2#
        • 2.Re3#
        • 2.Qf3#
      • 1...dxc6!
    • 1.Sf7?
      • 1...b2
        • 2.Bxc2#
      • 1...Kd3!
    • 1.Ra1?
      • 1...b2
        • 2.Bxc2#
      • 1...a3!
    • 1.Ra2?
      • 1...bxa2
        • 2.Bxc2#
      • 1...b2
        • 2.Bxc2#
      • 1...a3!
    • 1.Rxa4?
      • 1...b2
        • 2.Bxc2#
      • 1...bxa4!
    • 1.Qg1?
      • threat
        • 2.Qg4#
      • 1...Kf4
        • 2.Qg4#
      • 1...Kf5!
    • 1.Qd2?
      • 1...b2
        • 2.Bxc2#
      • 1...Kf5!
  • Keys
    • 1.Sf3!
      • 1...Kd3
        • 2.Qxc2#
      • 1...Kf4
        • 2.Sd2#
      • 1...Kf5
        • 2.Sg5#
      • 1...b2
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(b);N_GUARD::B(A),XR(a)
  • Tries
    • Try
      • K(G);P-FLIGHT
      • Vars
        • P(b);N_GUARD::B(A),XR(a)
      • Refutation
        • P(g);
    • Try
      • S(F);
      • Vars
        • P(b);N_GUARD::B(A),XR(a)
      • Refutation
        • K(d);P_SPINP(b),S_FLIGHT
    • Try
      • S(F);
      • Vars
        • K(d);P_SPINP(b),S_FLIGHT::QAB1(B),XR(a)
      • Refutation
        • P(h);XS(F)
    • Try
      • S(F);
      • Vars
        • P(b);N_GUARD::B(A),XR(a)
      • Refutation
        • K(d);P_SPINP(b),S_FLIGHT
    • Try
      • R(C);
      • Vars
        • P(b);N_GUARD::B(A),XR(a)
      • Refutation
        • P(c);
    • Try
      • R(C);
      • Vars
        • P(b);N_GUARD,XR(C)::B(A),XR(a)
        • P(b);N_GUARD::B(A),XR(a)
      • Refutation
        • P(c);
    • Try
      • R(C);XP(c)
      • Vars
        • P(b);N_GUARD::B(A),XR(a)
      • Refutation
        • P(e);XR(C)
    • Try
      • Q(B);
      • Threat
        • QAR2(B)
      • Vars
        • K(d);N_SPINR(a),P-FLIGHT::QAR1(B)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • P(b);N_GUARD::B(A),XR(a)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • S(F);
    • Vars
      • K(d);P_SPINP(b),S_FLIGHT::QAB1(B),XR(a)
      • K(d);N_SPINR(a),P-FLIGHT::QAR(B)+S(F)
      • K(d);S_FLIGHT::QAR(B)+S(F)
      • P(b);::S(F)
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