MESON Chess Problem Database

Problem Display
PID: 134299 (7Q/1q6/1NbNpp2/1pP1k3/1R4n1/P2R4/3P2B1/K1Bn4 w - - 0 1)

Heyl, Peter

Sachsische Zeitung, 1999

7Q/1q6/1NbNpp2/1pP1k3/1R4n1/P2R4/3P2B1/K1Bn4

#2

11 + 8

14503 Problemschach-Jahrbuch (1999) 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.Bxb2#
    • 1...Sdf2
      • 2.Bb2#
    • 1...Sde3
      • 2.Bb2#
    • 1...Sgf2
      • 2.Qh2#
    • 1...Sh2
      • 2.Qxh2#
    • 1...Sge3
      • 2.Qh2#
  • Tries
    • 1.Sf7+?
      • 1...Kf5
        • 2.Qh5#
        • 2.Qh7#
      • 1...Qxf7!
    • 1.Bb2+?
      • 1...Sc3
        • 2.Bxc3#
      • 1...Sxb2!
    • 1.Rc3?
      • threat
        • 2.d4#
      • 1...Sge3
        • 2.Qh2#
      • 1...Sde3!
    • 1.Re3+?
      • 1...Sdxe3
        • 2.Bb2#
      • 1...Sgxe3
        • 2.Qh2#
      • 1...Be4!
    • 1.Rg3?
      • threat
        • 2.d4#
      • 1...Sde3
        • 2.Bb2#
      • 1...Sge3!
    • 1.Rh3?
      • threat
        • 2.Rh5#
        • 2.d4#
      • 1...Be4
        • 2.d4#
      • 1...Qf7
        • 2.d4#
      • 1...Qg7
        • 2.d4#
      • 1...Qh7
        • 2.d4#
      • 1...Be8
        • 2.d4#
      • 1...Sde3
        • 2.Bb2#
      • 1...Sh6
        • 2.d4#
      • 1...Sge3!
    • 1.Rd5+?
      • 1...Bxd5
        • 2.d4#
      • 1...exd5!
  • Keys
    • 1.Rdb3!
      • threat
        • 2.d4#
      • 1...Sde3
        • 2.Bb2#
      • 1...Sge3
        • 2.Qh2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • S(a);N_GUARD::B(B),XS(a)
    • S(a);N_GUARD::B(B)
    • S(b);N_GUARD::QAB(K)
    • S(b);N_GUARD::QAB(K),XS(b)
  • Tries
    • Try
      • S(J);CHECK
      • Refutation
        • Q(h);XS(J)
    • Try
      • B(B);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::B(B),XS(a)
      • Refutation
        • S(a);XB(B)
    • Try
      • R(F);
      • Threat
        • P(C)
      • Vars
        • S(b);N_GUARD::QAB(K)
      • Refutation
        • S(a);
    • Try
      • R(F);CHECK
      • Vars
        • S(a);XR(F)::B(B)
        • S(b);XR(F)::QAB(K)
      • Refutation
        • B(e);P_SPINB(e)
    • Try
      • R(F);
      • Threat
        • P(C)
      • Vars
        • S(a);N_GUARD::B(B)
      • Refutation
        • S(b);
    • Try
      • R(F);
      • Threat
        • DUALS(2)
      • Vars
        • B(e);::P(C)
        • Q(h);::P(C)
        • Q(h);N_SPINP(g)::P(C)
        • S(a);N_GUARD::B(B)
        • S(b);::P(C)
      • Refutation
        • S(b);
    • Try
      • R(F);CHECK
      • Vars
        • B(e);XR(F)::P(C)
      • Refutation
        • P(f);XR(F)
  • Actual
    • R(F);
    • Threat
      • P(C)
    • Vars
      • S(a);N_GUARD::B(B)
      • S(b);N_GUARD::QAB(K)
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