MESON Chess Problem Database

Problem Display
PID: 238271 (1B2B1K1/q1p3b1/R3pp2/r7/b3kPQN/2nR4/2PPp2n/4N3 w - - 0 1)

Segers, Marcel

Skakbladet, 1931

1B2B1K1/q1p3b1/R3pp2/r7/b3kPQN/2nR4/2PPp2n/4N3

#2

11 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bb5
      • 2.Rxe6#
    • 1...Sf1
      • 2.Qf3#
    • 1...Sf3
      • 2.Qxf3#
    • 1...Sb5
      • 2.Bc6#
      • 2.Rxe6#
    • 1...Sd5
      • 2.Rxe6#
    • 1...e5
      • 2.Qf5#
    • 1...c5
      • 2.Rxe6#
      • 2.Qxe6#
  • Tries
    • 1.Bg6+?
      • 1...Rf5
        • 2.Rxe6#
      • 1...f5!
    • 1.Qg2+?
      • 1...Sf3
        • 2.Qxf3#
      • 1...Kxf4!
    • 1.f5+?
      • 1...Ke5
        • 2.Sg6#
        • 2.Rxe6#
      • 1...Sxg4!
  • Keys
    • 1.Rxe6+!
      • 1...Re5
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • B(d);S_CUTR(f)::R(H),XP(g)
    • S(b);N_GUARD::QAB1(F)
    • S(b);N_GUARD::QAB1(F),XS(b)
    • S(c);S_CUTR(f)::R(H),XP(g)
    • P(g);N_GUARD,S_CUTR(f)::QAB1(F)
  • Tries
    • Try
      • B(J);CHECK
      • Vars
        • R(f);P_SPINR(f)::R(H),XP(g)
      • Refutation
        • P(h);P_SPINP(h)
    • Try
      • Q(F);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAB1(F),XS(b)
      • Refutation
        • K(e);P-FLIGHT,P_SPINP(j),XP(E)
    • Try
      • P(E);CHECK
      • Refutation
        • S(b);XQ(F)
  • Actual
    • R(H);CHECK,XP(g)
    • Vars
      • R(f);P_SPINR(f)::QAB1(F)
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Developed and maintained by Brian Stephenson.
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