MESON Chess Problem Database

Problem Display
PID: 117711 (8/5R1K/8/2pprn2/R1p1kB2/p2p1N1N/rb6/5Q1b w - - 0 1)

Monreal, Pierre

Scotti, Louis

SEPA, 1956

8/5R1K/8/2pprn2/R1p1kB2/p2p1N1N/rb6/5Q1b

#2

7 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bd4
      • 2.Sfg5#
    • 1...Sd4
      • 2.Sd2#
  • Tries
    • 1.Sxe5?
      • threat
        • 2.Qxd3#
      • 1...Kd4
        • 2.Qxd3#
      • 1...Bd4
        • 2.Sg5#
      • 1...Sd4
        • 2.Sf2#
        • 2.Sg5#
      • 1...d2
        • 2.Qd3#
      • 1...d4
        • 2.Qxh1#
      • 1...Bxe5!
    • 1.Qe2+?
      • 1...Se3
        • 2.Sf2#
        • 2.Qxe3#
      • 1...dxe2!
    • 1.Qe1+?
      • 1...Se3
        • 2.Qxe3#
      • 1...Kxf3!
  • Keys
    • 1.Se1!
      • threat
        • 2.Qxd3#
      • 1...Kd4
        • 2.Qxd3#
      • 1...Bd4
        • 2.Sg5#
      • 1...Sd4
        • 2.Sf2#
      • 1...d2
        • 2.Qd3#
      • 1...d4
        • 2.Qxh1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(c);N_SPINP(f),SBLOCK::S(B)
    • S(k);N_SPINP(f),SBLOCK::S(B)
  • Tries
    • Try
      • S(B);XR(j)
      • Threat
        • QAB1(A),XP(e)
      • Vars
        • K(g);P-FLIGHT::QAR1(A),XP(e)
        • B(c);N_SPINP(f),SBLOCK::S(C)
        • P(e);::QAB1(A)
        • P(i);N_SPINP(f),SBLOCK::QAB(A),XB(a)
      • Refutation
        • B(c);XS(B)
    • Try
      • Q(A);CHECK
      • Refutation
        • P(e);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • S(k);N_GUARD,P_SPINS(k)::QAR1(A),XS(k)
      • Refutation
        • K(g);N_SPINP(f),S_FLIGHT,XS(B)
  • Actual
    • S(B);
    • Threat
      • QAB1(A),XP(e)
    • Vars
      • K(g);P-FLIGHT::QAR1(A),XP(e)
      • B(c);N_SPINP(f),SBLOCK::S(C)
      • S(k);N_SPINP(f),SBLOCK::S(C)
      • P(e);::QAB1(A)
      • P(i);N_SPINP(f),SBLOCK::QAB(A),XB(a)
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