MESON Chess Problem Database

Problem Display
PID: 85464 (8/1Qp1r3/K1R5/p2N1p1N/4k1n1/2PR1n2/3p1P1B/3Br3 w - - 0 1)

Muller, Dieter

Problemas, 1971

8/1Qp1r3/K1R5/p2N1p1N/4k1n1/2PR1n2/3p1P1B/3Br3

#2

10 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd3
      • 2.Qb1#
    • 1...Sg1
      • 2.Rd4#
    • 1...Sd4
      • 2.Rxd4#
    • 1...Sh4
      • 2.Rd4#
    • 1...Sfe5
      • 2.Rd4#
    • 1...Sg5
      • 2.Rd4#
  • Tries
    • 1.Sdf6+?
      • 1...Kxd3
        • 2.Sf4#
        • 2.Qb1#
        • 2.Qb5#
      • 1...Sxf6!
    • 1.Sg3+?
      • 1...Kxd3
        • 2.Sf4#
        • 2.Qb1#
        • 2.Qb5#
      • 1...Ke5!
    • 1.Shf6+?
      • 1...Kxd3
        • 2.Sf4#
        • 2.Qb1#
        • 2.Qb5#
      • 1...Sxf6!
    • 1.Rc4+?
      • 1...Sd4
        • 2.Rdxd4#
        • 2.Rcxd4#
      • 1...Kxd3!
    • 1.Qb4+?
      • 1...Kxd3
        • 2.Sdf4#
        • 2.Shf4#
        • 2.Qb1#
        • 2.Qc4#
      • 1...Sd4
        • 2.Rxd4#
        • 2.Qxd4#
      • 1...axb4!
  • Keys
    • 1.Sdf4!
      • threat
        • 2.Re6#
      • 1...Ke5
        • 2.Rc5#
      • 1...Re5
        • 2.Bxf3#
        • 2.Rc4#
      • 1...Re6
        • 2.Rxe6#
      • 1...Sfe5
        • 2.Rd4#
        • 2.Rc4#
      • 1...Sge5
        • 2.Sf6#
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • K(d);OGATEB,S_FLIGHT,XR(E)::QAB(J)
    • S(c);N_GUARD::R1(E)
    • S(c);N_GUARD::R1(E),XS(c)
  • Tries
    • Try
      • S(F);CHECK
      • Refutation
        • S(e);XS(F)
    • Try
      • S(G);CHECK
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • S(G);CHECK
      • Refutation
        • S(e);XS(G)
    • Try
      • R(I);CHECK
      • Refutation
        • K(d);S_FLIGHT,XR(E)
    • Try
      • Q(J);CHECK
      • Refutation
        • P(f);XQ(J)
  • Actual
    • S(F);
    • Threat
      • QAB(J)+R(I),DCHECK
    • Vars
      • K(d);P-FLIGHT::R(I)
      • R(i);P_PINR(I)::QAB(J)+R(I),DCHECK,XR(i)
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