MESON Chess Problem Database

Problem Display
PID: 151288 (1B2R3/1Q5B/KN2b1r1/3PP1q1/4kpp1/5p2/5P2/3R4 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Deutsche Schachblatter, 1941

1B2R3/1Q5B/KN2b1r1/3PP1q1/4kpp1/5p2/5P2/3R4

#2

10 + 7

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Qf5
      • 2.dxe6#
    • 1...Bf5
      • 2.d6#
  • Tries
    • 1.Sc8?
      • threat
        • 2.Qb1#
      • 1...Bxd5+
        • 2.Sd6#
      • 1...Bf5+
        • 2.d6#
      • 1...Bd7+
        • 2.Sd6#
      • 1...Bf7+
        • 2.Sd6#
      • 1...Bg8+
        • 2.Sd6#
      • 1...Kf5
        • 2.Qb1#
      • 1...Bxc8+!
    • 1.Bxg6+?
      • 1...Qf5
        • 2.dxe6#
      • 1...Bf5
        • 2.d6#
      • 1...Qxg6!
    • 1.Qc6?
      • threat
        • 2.Qc2#
      • 1...Kf5
        • 2.Qc2#
      • 1...Bc8+!
    • 1.Qc8?
      • threat
        • 2.Qc2#
      • 1...Kf5
        • 2.Qc2#
      • 1...Bxc8+!
    • 1.Qc7?
      • threat
        • 2.Qc2#
      • 1...Kf5
        • 2.Qc2#
      • 1...Bc8+!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Qb1#
      • 1...Bxd5+
        • 2.Sd6#
      • 1...Bf5+
        • 2.d6#
      • 1...Bd7+
        • 2.Sd6#
      • 1...Bf7+
        • 2.Sd6#
      • 1...Bc8+
        • 2.Sd6#
      • 1...Bg8+
        • 2.Sd6#
      • 1...Kf5
        • 2.Qb1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • Q(e);N_SPINR(g),SBLOCK::QAB(G)+P(C),XB(f)
    • B(f);N_GUARD,N_SPINR(g),P_PINS(F),SBLOCK::QAB(G)+P(C)
  • Tries
    • Try
      • S(F);
      • Threat
        • QAB(G)
      • Vars
        • B(f);CHECK,P_SPINB(f),XP(C)::S(F)
        • B(f);CHECK,N_GUARD,N_SPINR(g),SBLOCK::QAB(G)+P(C)
        • B(f);CHECK::S(F)
        • K(b);S_FLIGHT::QAB(G)
      • Refutation
        • B(f);CHECK,P_PINQ(G),XS(F)
    • Try
      • B(H);CHECK,XR(g)
      • Vars
        • Q(e);P_SPINQ(e)::QAB(G)+P(C),XB(f)
        • B(f);P_SPINB(f)::QAB(G)+P(C)
      • Refutation
        • Q(e);XB(H)
    • Try
      • Q(G);
      • Threat
        • QAB(G)
      • Vars
        • K(b);S_FLIGHT::QAB(G)
      • Refutation
        • B(f);CHECK
    • Try
      • Q(G);
      • Threat
        • QAB(G)
      • Vars
        • K(b);P_SPINB(f),S_FLIGHT::QAB(G)
      • Refutation
        • B(f);CHECK,P_PINS(F),XQ(G)
    • Try
      • Q(G);
      • Threat
        • QAB(G)
      • Vars
        • K(b);S_FLIGHT::QAB(G)
      • Refutation
        • B(f);CHECK,P_PINS(F)
  • Actual
    • S(F);
    • Threat
      • QAB(G)
    • Vars
      • B(f);CHECK,P_SPINB(f),XP(C)::S(F)
      • B(f);CHECK,N_GUARD,N_SPINR(g),SBLOCK::QAB(G)+P(C)
      • B(f);CHECK::S(F)
      • B(f);CHECK,P_PINQ(G)::S(F)
      • K(b);S_FLIGHT::QAB(G)
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