MESON Chess Problem Database

Problem Display
PID: 136191 (4rB2/1b2qp2/1R1p1p2/P1k2rR1/8/1Bn1pQ2/2N1P3/3N1K2 w - - 0 1)

Barthe, V

Die Schwalbe, 1933

4rB2/1b2qp2/1R1p1p2/P1k2rR1/8/1Bn1pQ2/2N1P3/3N1K2

#2

10 + 10

6490 yacpdb 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Bxd6#
    • 1...Re5
      • 2.Qxe3#
  • Tries
    • 1.Sxc3?
      • threat
        • 2.Sa4#
        • 2.Rb5#
      • 1...Bxf3
        • 2.Sa4#
      • 1...Qe4
        • 2.Bxd6#
      • 1...Rd5
        • 2.Sa4#
      • 1...Be4
        • 2.Sa4#
      • 1...Bd5
        • 2.Sa4#
      • 1...Ba6
        • 2.Sa4#
        • 2.Rc6#
      • 1...Bc6
        • 2.Rxc6#
      • 1...d5
        • 2.Sa4#
      • 1...Qd7!
  • Keys
    • 1.Sf2!
      • threat
        • 2.Sd3#
      • 1...exf2
        • 2.Qxc3#
      • 1...Qe4
        • 2.Bxd6#
      • 1...Be4
        • 2.Qxe3#
      • 1...Ba6
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • Q(h);OGATE,P_SPINP(e)::B(J),XP(e)
    • R(d);N_PINQ(F)::QAB(F),XP(b)
  • Tries
    • Try
      • S(A);XS(a)
      • Threat
        • DUALS(2)
      • Vars
        • B(g);XQ(F)::S(A)
        • Q(h);OGATE,P_SPINP(e)::B(J),XP(e)
        • R(d);N_PINQ(F)::S(A)
        • B(g);::S(A)
        • B(g);N_SPINR(d)::S(A)
        • B(g);N_GUARD::R1(I),XB(g)
        • P(e);N_SPINR(d),P_SPINQ(h)::S(A)
      • Refutation
        • Q(h);P_SPINP(e)
  • Actual
    • S(A);N_SPINQ(F)
    • Threat
      • S(A)
    • Vars
      • P(b);OGATE,XS(A)::QAR2(F),XS(a)
      • Q(h);OGATE,P_SPINP(e)::B(J),XP(e)
      • B(g);S_CUTQ(h)::QAB(F),XP(b)
      • B(g);N_GUARD,P_PINP(D)::QAR1(F)
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