MESON Chess Problem Database

Problem Display
PID: 17477 (5R1K/1bPQ4/5p2/3NB2p/4k3/rR1n2PB/3rpP1p/3N3q w - - 0 1)

Visserman, Eeltje

Arbejder-Skak, 1947

5R1K/1bPQ4/5p2/3NB2p/4k3/rR1n2PB/3rpP1p/3N3q

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Kf3
      • 2.Qf5#
    • 1...Bxd5
      • 2.Qf5#
    • 1...Sxe5
      • 2.Sxf6#
    • 1...fxe5
      • 2.S5c3#
  • Tries
    • 1.S5c3+?
      • 1...Kxe5
        • 2.Re8#
      • 1...Kf3!
    • 1.Sb4?
      • threat
        • 2.Qf5#
      • 1...Kf3
        • 2.Qf5#
      • 1...Kxe5
        • 2.Re8#
      • 1...Sxe5
        • 2.Bf5#
      • 1...fxe5
        • 2.Sc3#
      • 1...Qf3
        • 2.Qd4#
      • 1...Bc8
        • 2.Qd5#
      • 1...f5
        • 2.Qxf5#
      • 1...Sxb4!
    • 1.Sxf6+?
      • 1...Kf3
        • 2.Qf5#
      • 1...Kxe5!
    • 1.Se7?
      • threat
        • 2.Qf5#
      • 1...Kf3
        • 2.Qf5#
      • 1...Sxe5
        • 2.Bf5#
      • 1...fxe5
        • 2.Sc3#
      • 1...Qf3
        • 2.Qd4#
      • 1...Bc8
        • 2.Qd5#
      • 1...f5
        • 2.Qxf5#
      • 1...Kxe5!
  • Keys
    • 1.Sb6!
      • threat
        • 2.Qf5#
      • 1...Kf3
        • 2.Qf5#
      • 1...Kxe5
        • 2.Re8#
      • 1...Sxe5
        • 2.Bf5#
      • 1...fxe5
        • 2.Sc3#
      • 1...Qf3
        • 2.Qd4#
      • 1...Bc8
        • 2.Qd5#
      • 1...f5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • K(g);P_SPINP(i),P_SPINS(f),S_FLIGHT::QAR2(I)
    • B(j);SBLOCK,XS(F)::QAB1(I)
    • S(f);SBLOCK,XB(G)::S(F),XP(i)
    • P(i);SBLOCK,XB(G)::S(F)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(g);P-FLIGHT,XB(G)::R(J)
      • Refutation
        • K(g);P_SPINP(i),S_FLIGHT
    • Try
      • S(F);
      • Threat
        • QAB1(I)
      • Vars
        • K(g);P_SPINP(i),P_SPINS(f),S_FLIGHT::QAR2(I)
        • K(g);OGATEB,P-FLIGHT,XB(G)::R(J)
        • S(f);SBLOCK,XB(G)::B(E)
        • P(i);SBLOCK,XB(G)::S(A)
        • Q(a);SBLOCK::QAR1(I)
        • B(j);N_GUARD::QAB1(I)
        • P(i);::QAB1(I),XP(i)
      • Refutation
        • S(f);XS(F)
    • Try
      • S(F);CHECK,XP(i)
      • Vars
        • K(g);P_SPINS(f),S_FLIGHT::QAR2(I)
      • Refutation
        • K(g);P-FLIGHT,XB(G)
    • Try
      • S(F);
      • Threat
        • QAB1(I)
      • Vars
        • K(g);P_SPINP(i),P_SPINS(f),S_FLIGHT::QAR2(I)
        • S(f);SBLOCK,XB(G)::B(E)
        • P(i);SBLOCK,XB(G)::S(A)
        • Q(a);SBLOCK::QAR1(I)
        • B(j);N_GUARD::QAB1(I)
        • P(i);::QAB1(I),XP(i)
      • Refutation
        • K(g);P-FLIGHT,XB(G)
  • Actual
    • S(F);
    • Threat
      • QAB1(I)
    • Vars
      • K(g);P_SPINP(i),P_SPINS(f),S_FLIGHT::QAR2(I)
      • K(g);OGATEB,P-FLIGHT,XB(G)::R(J)
      • S(f);SBLOCK,XB(G)::B(E)
      • P(i);SBLOCK,XB(G)::S(A)
      • Q(a);SBLOCK::QAR1(I)
      • B(j);N_GUARD::QAB1(I)
      • P(i);::QAB1(I),XP(i)
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