MESON Chess Problem Database

Problem Display
PID: 58496 (2R1R3/1p1B4/1P4K1/1p2p3/bPPk4/1p1p4/1n1QP3/8 w - - 0 1)

Willemsens, Luis Cornelis

Chess Life, 1959

2R1R3/1p1B4/1P4K1/1p2p3/bPPk4/1p1p4/1n1QP3/8

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Qxd3#
    • 1...Sxc4
      • 2.Qxd3#
    • 1...e4
      • 2.e3#
  • Tries
    • 1.Kf5?
      • threat
        • 2.e3#
      • 1...Sxc4
        • 2.Qxd3#
      • 1...Sd1
        • 2.Qxd3#
      • 1...bxc4!
    • 1.Kg5?
      • 1...Ke4
        • 2.Qf4#
      • 1...Sxc4
        • 2.Qxd3#
      • 1...Sd1
        • 2.Qxd3#
      • 1...e4
        • 2.e3#
      • 1...bxc4!
    • 1.Bf5?
      • threat
        • 2.Red8#
        • 2.e3#
      • 1...Sxc4
        • 2.Qxd3#
      • 1...Sd1
        • 2.Red8#
        • 2.Qxd3#
      • 1...e4
        • 2.Rxe4#
        • 2.e3#
      • 1...bxc4!
    • 1.Red8?
      • threat
        • 2.Bf5#
      • 1...Ke4
        • 2.Bf5#
      • 1...Sxc4
        • 2.Qxd3#
      • 1...bxc4
        • 2.Bc6#
      • 1...e4!
    • 1.Qxb2+?
      • 1...Ke4
        • 2.Qxe5#
      • 1...Ke3!
  • Keys
    • 1.Rcd8!
      • 1...Kxc4
        • 2.Be6#
      • 1...Ke4
        • 2.Bf5#
      • 1...Sxc4
        • 2.Qxd3#
      • 1...bxc4
        • 2.Bc6#
      • 1...Sd1
        • 2.Qxd3#
      • 1...e4
        • 2.Bxb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAR1(A),XP(c)
    • S(a);N_GUARD,XP(D)::QAR1(A),XP(c)
    • P(g);::P(B)
  • Tries
    • Try
      • K(F);S_FLIGHT
      • Threat
        • P(B)
      • Vars
        • S(a);N_GUARD,XP(D)::QAR1(A),XP(c)
        • S(a);N_GUARD::QAR1(A),XP(c)
      • Refutation
        • P(f);XP(D)
    • Try
      • K(F);P-FLIGHT
      • Vars
        • K(e);N_SPINP(c),P-FLIGHT,P_SPINP(g)::QAR1(A)
        • S(a);N_GUARD,XP(D)::QAR1(A),XP(c)
        • S(a);N_GUARD::QAR1(A),XP(c)
        • P(g);::P(B)
      • Refutation
        • P(f);XP(D)
    • Try
      • B(G);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);N_GUARD,XP(D)::QAR1(A),XP(c)
      • Refutation
        • P(f);XP(D)
    • Try
      • R(I);
      • Threat
        • R(I)+B(G)
      • Vars
        • K(e);N_SPINP(c),P-FLIGHT::B(G)
        • S(a);N_GUARD,XP(D)::QAR1(A),XP(c)
        • P(f);SBLOCK,XP(D)::R(I)+B(G)
      • Refutation
        • P(g);
    • Try
      • Q(A);CHECK,N_PINP(c),XS(a)
      • Vars
        • K(e);OGATE,P-FLIGHT,P_SPINP(g)::QAR1(A),XP(g)
      • Refutation
        • K(e);P_SPINP(g),S_FLIGHT
  • Actual
    • R(H);
    • Vars
      • K(e);N_SPINP(c),P-FLIGHT,XP(D)::B(G)
      • K(e);N_SPINP(c),P-FLIGHT,P_SPINP(g)::B(G)
      • S(a);N_GUARD,XP(D)::QAR1(A),XP(c)
      • P(f);SBLOCK,XP(D)::R(H)+B(G)
      • S(a);N_GUARD::QAR1(A),XP(c)
      • P(g);::R(H)+B(G),XP(f)
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