MESON Chess Problem Database

Problem Display
PID: 135368 (8/n3N1b1/rp6/pk2nR1b/p7/P2P3r/6B1/K1R2Q2 w - - 0 1)

Beck, Friedrich

Laib, Kurt Friedrich

Die Schwalbe, 1942

8/n3N1b1/rp6/pk2nR1b/p7/P2P3r/6B1/K1R2Q2

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd3
      • 2.Qxd3#
    • 1...Bh6
      • 2.Rxe5#
    • 1...Bf8
      • 2.Rxe5#
    • 1...Sc6
      • 2.Bxc6#
    • 1...Sc8
      • 2.Bc6#
  • Tries
    • 1.Sc6?
      • threat
        • 2.Sd4#
      • 1...Sxc6
        • 2.Bxc6#
      • 1...Rh4!
    • 1.Sc8?
      • threat
        • 2.Sd6#
      • 1...Sxc8
        • 2.Bc6#
      • 1...Bf8!
    • 1.Rc5+?
      • 1...bxc5
        • 2.Qb1#
      • 1...Kxc5!
    • 1.d4+?
      • 1...Rd3
        • 2.Qxd3#
      • 1...Be2!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Sc7#
      • 1...Sxd3+
        • 2.Sf6#
      • 1...Sf3+
        • 2.d4#
      • 1...Sc4+
        • 2.Sc3#
      • 1...Sg4+
        • 2.Sc3#
      • 1...Sec6+
        • 2.Sc3#
      • 1...Sg6+
        • 2.Sc3#
      • 1...Sd7+
        • 2.Sc3#
      • 1...Sf7+
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 5
  • Sets
    • R(a);OGATE,P_SPINR(a),XP(F)::QAB(C),XR(a)
    • B(j);N_GUARD::R(G),XS(e)
    • S(i);N_GUARD::B(D),XS(i)
    • S(i);N_GUARD::B(D)
  • Tries
    • Try
      • S(H);
      • Threat
        • S(H)
      • Vars
        • S(i);OGATE,XS(H)::B(D),XS(i)
      • Refutation
        • R(a);
    • Try
      • S(H);
      • Threat
        • S(H)
      • Vars
        • S(i);N_GUARD,XS(H)::B(D)
      • Refutation
        • B(j);
    • Try
      • R(B);CHECK,N_PINS(e)
      • Vars
        • P(h);SBLOCK,XR(B)::QAR(C)
      • Refutation
        • K(d);P-FLIGHT,P_SPINS(e),XR(B)
    • Try
      • P(F);CHECK
      • Vars
        • R(a);N_GUARD,P_SPINR(a)::QAB(C),XR(a)
      • Refutation
        • B(f);P_SPINB(f)
  • Actual
    • S(H);N_PINS(e)
    • Threat
      • S(H)
    • Vars
      • S(e);CHECK,P_SPINS(e),XP(F)::R(G)+S(H)
      • S(e);CHECK,N_GUARD,S_CUTB(f),S_CUTR(a)::QAB(C)+P(F)
      • S(e);CHECK::R(G)+S(H),DCHECK
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