MESON Chess Problem Database

Problem Display
PID: 174797 (1K6/1B2n3/Q5b1/2k1r1r1/4p3/2P3P1/4R2B/4N3 w - - 0 1)

Barth, Michael

Freie Presse, 1986

1K6/1B2n3/Q5b1/2k1r1r1/4p3/2P3P1/4R2B/4N3

#2

8 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sd5
      • 2.Qc6#
    • 1...Sf5
      • 2.Qc6#
    • 1...Sc6+
      • 2.Qxc6#
    • 1...Sc8
      • 2.Qc6#
    • 1...Sg8
      • 2.Qc6#
  • Tries
    • 1.Ra2?
      • threat
        • 2.Ra5#
      • 1...Sc6+
        • 2.Qxc6#
      • 1...Be8!
    • 1.Qa3+?
      • 1...Kc4
        • 2.Qb4#
      • 1...Kb5
        • 2.Qb4#
      • 1...Kb6!
    • 1.Qa5+?
      • 1...Kc4
        • 2.Qb4#
      • 1...Kd6!
    • 1.Qb6+?
      • 1...Kc4
        • 2.Qb4#
      • 1...Kxb6!
    • 1.Qd6+?
      • 1...Kc4
        • 2.Qb4#
      • 1...Kb5
        • 2.Qb4#
      • 1...Kxd6!
  • Keys
    • 1.Rxe4!
      • threat
        • 2.Sd3#
        • 2.Bg1#
        • 2.Rc4#
      • 1...Sc6+
        • 2.Qxc6#
      • 1...Rxe4
        • 2.Sd3#
      • 1...Rxg3
        • 2.Rc4#
      • 1...Bxe4
        • 2.Bg1#
      • 1...Rd5
        • 2.Rc4#
      • 1...Ref5
        • 2.Sd3#
        • 2.Rc4#
      • 1...Rg4
        • 2.Sd3#
        • 2.Bg1#
      • 1...Rgf5
        • 2.Sd3#
        • 2.Rc4#
      • 1...Bf7
        • 2.Sd3#
        • 2.Bg1#
      • 1...Sd5
        • 2.Sd3#
        • 2.Rc4#
        • 2.Qc6#
      • 1...Sf5
        • 2.Sd3#
        • 2.Rc4#
        • 2.Rxe5#
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • S(f);N_GUARD::QAR1(F)
    • S(f);CHECK,N_GUARD::QAR1(F),XS(f)
  • Tries
    • Try
      • R(B);
      • Threat
        • R(B)
      • Vars
        • S(f);CHECK,N_GUARD::QAR1(F),XS(f)
      • Refutation
        • B(e);
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(F)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(F)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(F)
      • Refutation
        • K(b);S_FLIGHT,XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(F)
      • Refutation
        • K(b);S_FLIGHT,XQ(F)
  • Actual
    • R(B);XP(a)
    • Threat
      • DUALS(3)
    • Vars
      • S(f);CHECK,N_GUARD::QAR1(F),XS(f)
      • R(c);XR(B)::S(A)
      • R(d);XP(E)::R1(B)
      • B(e);XR(B)::B(C)
      • R(c);::R1(B)
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