MESON Chess Problem Database

Problem Display
PID: 238689 (B6n/4N1bQ/1p2K3/3pnp1N/4k3/2Pp2Rb/qp4P1/8 w - - 0 1)

Ahues, Herbert Siegfried Oskar

idee & form, 2018

B6n/4N1bQ/1p2K3/3pnp1N/4k3/2Pp2Rb/qp4P1/8

#2

8 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Bxd5#
    • 1...Qa1
      • 2.Bxd5#
    • 1...Qa3
      • 2.Bxd5#
    • 1...Qa4
      • 2.Bxd5#
    • 1...Qa6
      • 2.Bxd5#
    • 1...Qa7
      • 2.Bxd5#
    • 1...Bxg2
      • 2.Qxf5#
    • 1...Sc4
      • 2.Bxd5#
    • 1...Sg4
      • 2.Qxf5#
  • Tries
    • 1.Sxf5?
      • threat
        • 2.Re3#
      • 1...Bxf5+
        • 2.Qxf5#
      • 1...Sf3
        • 2.gxf3#
      • 1...Sc4
        • 2.Bxd5#
      • 1...Sg4
        • 2.Sd6#
      • 1...Bh6!
    • 1.Rf3?
      • threat
        • 2.Sg3#
      • 1...Bxg2
        • 2.Qxf5#
      • 1...Sxf3!
  • Keys
    • 1.Sxd5!
      • threat
        • 2.Re3#
      • 1...Qxd5+
        • 2.Bxd5#
      • 1...Bh6
        • 2.Sf6#
      • 1...Sf3
        • 2.gxf3#
      • 1...Sc4
        • 2.Sdf6#
      • 1...Sg4
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • Q(a);N_GUARD::B(H),XP(f)
    • B(d);N_GUARD,XP(A)::QAB1(G),XP(h)
    • S(g);S_CUTQ(a)::B(H),XP(f)
    • S(g);S_CUTB(d)::QAB1(G),XP(h)
  • Tries
    • Try
      • S(F);P_SPINS(F),XP(h)
      • Threat
        • R1(C)
      • Vars
        • B(d);CHECK,OGATE,P_SPINB(d),XS(F)::QAB1(G),XB(d)
        • S(g);OGATE::P(A),XS(g)
        • S(g);S_CUTQ(a)::B(H),XP(f)
        • S(g);N_PINS(F)::QAB(G)+S(F),DCHECK
      • Refutation
        • B(j);
    • Try
      • R(C);
      • Threat
        • S(D)
      • Vars
        • B(d);N_GUARD,XP(A)::QAB1(G),XP(h)
      • Refutation
        • S(g);XR(C)
  • Actual
    • S(F);P_PINP(h),P_SPINS(F),XP(f)
    • Threat
      • R1(C)
    • Vars
      • Q(a);CHECK,OGATE,P_SPINQ(a),XS(F)::B(H),XQ(a)
      • B(j);N_GUARD::S(D)
      • S(g);OGATE::P(A),XS(g)
      • S(g);N_PINS(F)::B(H)+S(F),DCHECK
      • S(g);S_CUTB(d)::QAB1(G),XP(h)
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