MESON Chess Problem Database

Problem Display
PID: 67605 (B1N5/B2ppr2/2r1PpN1/Qp1k1Pn1/2b4R/1n1p4/6K1/8 w - - 0 1)

Reichling, Gerd

3rd HM., Die Schwalbe, 1981

B1N5/B2ppr2/2r1PpN1/Qp1k1Pn1/2b4R/1n1p4/6K1/8

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Sa1
      • 2.Rd4#
    • 1...Sc1
      • 2.Rd4#
    • 1...Sd2
      • 2.Rd4#
    • 1...Sd4
      • 2.Rxd4#
    • 1...Sxa5
      • 2.Rd4#
    • 1...dxe6
      • 2.Qd8#
  • Tries
    • 1.Bxc6+?
      • 1...dxc6
        • 2.Qd8#
      • 1...Kxc6!
    • 1.Qe1?
      • threat
        • 2.Sf4#
      • 1...Sxe6
        • 2.Qe4#
      • 1...Sh3
        • 2.Qe4#
      • 1...Se4
        • 2.Qxe4#
      • 1...Sc5!
    • 1.Qb4?
      • threat
        • 2.Sb6#
      • 1...Sc5
        • 2.Qxc5#
      • 1...Se4!
    • 1.Qxb5+?
      • 1...Sc5
        • 2.Qxc4#
        • 2.Qxc5#
      • 1...Bxb5!
  • Keys
    • 1.Qc7!
      • threat
        • 2.Qxd7#
      • 1...dxe6
        • 2.Bxc6#
        • 2.Qd8#
        • 2.Qxc6#
        • 2.Qd7#
      • 1...Sc5
        • 2.Sb6#
      • 1...Se4
        • 2.Sf4#
      • 1...d6
        • 2.Bxc6#
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • S(a);N_GUARD::R1(B)
    • S(a);N_GUARD::R1(B),XS(a)
    • S(a);N_GUARD,N_SPINP(d),XQ(C)::R1(B)
    • P(i);OGATEB,XP(E)::QAR(C)
  • Tries
    • Try
      • B(H);CHECK,XR(g)
      • Vars
        • P(i);SBLOCK,XB(H)::QAR(C)
      • Refutation
        • K(e);N_SPINP(d),S_FLIGHT,XB(H)
    • Try
      • Q(C);N_PINP(d)
      • Threat
        • S(F)
      • Vars
        • S(f);N_GUARD,XP(E)::QAB1(C)
        • S(f);N_GUARD::QAB1(C)
        • S(f);N_GUARD::QAB1(C),XS(f)
      • Refutation
        • S(a);
    • Try
      • Q(C);N_PINP(d)
      • Threat
        • S(I)
      • Vars
        • S(a);N_GUARD::QAR1(C),XS(a)
      • Refutation
        • S(f);
    • Try
      • Q(C);CHECK,XP(d)
      • Refutation
        • B(c);XQ(C)
  • Actual
    • Q(C);N_PINP(d)
    • Threat
      • QAR2(C),XP(i)
    • Vars
      • S(a);SBLOCK::S(I)
      • S(f);SBLOCK::S(F)
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Developed and maintained by Brian Stephenson.
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