MESON Chess Problem Database

Problem Display
PID: 82337 (1N1R4/2n5/1R2P3/4k1BK/3p2P1/1npB1P2/Q1b4b/8 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Suomen Shakki, 1992

1N1R4/2n5/1R2P3/4k1BK/3p2P1/1npB1P2/Q1b4b/8

#2

10 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Qe2#
      • 2.Qxh2#
    • 1...Bd1
      • 2.Qxh2#
    • 1...Bxd3
      • 2.Qxh2#
    • 1...Bg1
      • 2.f4#
    • 1...Sa1
      • 2.Sc6#
      • 2.Sd7#
    • 1...Sc1
      • 2.Sc6#
      • 2.Sd7#
    • 1...Sd2
      • 2.Sc6#
      • 2.Sd7#
    • 1...Sa5
      • 2.Sd7#
    • 1...Sc5
      • 2.Sc6#
    • 1...Sd5
      • 2.Sd7#
    • 1...Sxe6
      • 2.Sc6#
  • Tries
    • 1.Bc4?
      • threat
        • 2.Sc6#
        • 2.Sd7#
      • 1...Be4
        • 2.Sd7#
        • 2.Qxh2#
      • 1...Sa5
        • 2.Sd7#
      • 1...Sc5
        • 2.Sc6#
      • 1...Sd5
        • 2.Sd7#
        • 2.Rxd5#
      • 1...d3
        • 2.Sc6#
      • 1...Bg6+!
    • 1.Be4?
      • threat
        • 2.Sd7#
      • 1...Bxe4
        • 2.Qxh2#
      • 1...Sc5
        • 2.Sc6#
      • 1...d3!
    • 1.Rd5+?
      • 1...Sxd5
        • 2.Sd7#
      • 1...Kxd5!
    • 1.Qxb3?
      • threat
        • 2.Sc6#
        • 2.Sd7#
      • 1...Sd5
        • 2.Sd7#
        • 2.Rxd5#
        • 2.Qxd5#
      • 1...Bxb3!
    • 1.Qa7?
      • threat
        • 2.Qxc7#
      • 1...Sxe6
        • 2.Sc6#
      • 1...Sb5
        • 2.Qg7#
      • 1...Sd5
        • 2.Sd7#
      • 1...Sa6
        • 2.Qg7#
      • 1...Sa8
        • 2.Qg7#
      • 1...Se8!
  • Keys
    • 1.Bf5!
      • threat
        • 2.Sc6#
      • 1...Bxf5
        • 2.Qxh2#
      • 1...Be4
        • 2.Qxh2#
      • 1...Sa5
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • B(a);OGATE::QAB(A),XB(b)
    • B(a);OGATE,XB(B)::QAB(A),XB(b)
    • B(b);N_GUARD::P(C)
    • S(c);::S(I)
    • S(g);SBLOCK::S(I)
    • S(g);SBLOCK,XP(H)::S(I)
  • Tries
    • Try
      • B(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(c);::S(I)
        • P(e);::S(I)
      • Refutation
        • B(a);CHECK
    • Try
      • B(B);
      • Threat
        • S(I)
      • Vars
        • B(a);OGATE,XB(B)::QAB(A),XB(b)
        • S(c);::S(I)
      • Refutation
        • P(e);
    • Try
      • R(J);CHECK
      • Vars
        • S(g);SBLOCK,XR(J)::S(I)
      • Refutation
        • K(f);P-FLIGHT,P_SPINS(c),XR(J)
    • Try
      • Q(A);XS(c)
      • Threat
        • DUALS(2)
      • Refutation
        • B(a);XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAB(A),XS(g)
      • Vars
        • S(g);SBLOCK,XP(H)::S(I)
        • S(g);OGATE::QAB(A)
        • S(g);SBLOCK::S(I)
      • Refutation
        • S(g);
  • Actual
    • B(B);
    • Threat
      • S(I)
    • Vars
      • B(a);OGATE,XB(B)::QAB(A),XB(b)
      • B(a);OGATE::QAB(A),XB(b)
      • S(c);::S(I)
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