MESON Chess Problem Database

Problem Display
PID: 129775 (8/1N2p2N/4k3/5p2/B3nP2/2P2Q2/8/4K3 w - - 0 1)

Budde, Otto C

Oesterreichische Lesehalle, 1882

8/1N2p2N/4k3/5p2/B3nP2/2P2Q2/8/4K3

#2

7 + 4

6490 yacpdb 2009
5454 Near Snap 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Sd6
      • 2.Sd8#
    • 1...Sf6
      • 2.Sg5#
  • Tries
    • 1.Be8?
      • 1...Sxc3
        • 2.Qc6#
      • 1...Sd2
        • 2.Qc6#
      • 1...Sf2
        • 2.Qc6#
      • 1...Sg3
        • 2.Qc6#
      • 1...Sc5
        • 2.Qc6#
      • 1...Sg5
        • 2.Qc6#
      • 1...Sd6
        • 2.Sc5#
        • 2.Sd8#
      • 1...Sf6
        • 2.Sg5#
        • 2.Sf8#
        • 2.Qc6#
      • 1...Kd5!
    • 1.Qe2?
      • threat
        • 2.Qc4#
        • 2.Qa2#
      • 1...Kd5
        • 2.Qa2#
      • 1...Kf7!
    • 1.Qd3?
      • threat
        • 2.Sd8#
        • 2.Bb3#
        • 2.Qc4#
      • 1...Sxc3
        • 2.Sd8#
      • 1...Sd2
        • 2.Sd8#
      • 1...Sc5
        • 2.Sd8#
        • 2.Qc4#
      • 1...Sd6
        • 2.Sd8#
      • 1...Sf6
        • 2.Sd8#
        • 2.Sg5#
      • 1...Kf7!
  • Keys
    • 1.Qg2!
      • threat
        • 2.Qa2#
        • 2.Qg8#
      • 1...Kd5
        • 2.Qa2#
      • 1...Kf7
        • 2.Sd8#
      • 1...Sxc3
        • 2.Qg8#
      • 1...Sd2
        • 2.Qg8#
      • 1...Sf2
        • 2.Qg8#
      • 1...Sg3
        • 2.Qa2#
      • 1...Sc5
        • 2.Qg8#
      • 1...Sg5
        • 2.Qa2#
      • 1...Sd6
        • 2.Sd8#
      • 1...Sf6
        • 2.Sg5#

This anticipates 64048(1910)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • S(a);SBLOCK::S(F)
    • S(a);N_GUARD,SBLOCK::S(G)
  • Tries
    • Try
      • B(D);
      • Vars
        • S(a);OGATE,XP(B)::QAR2(C)
        • S(a);OGATE::QAR2(C)
      • Refutation
        • K(c);P_SPINS(a),S_FLIGHT
    • Try
      • Q(C);P_PINS(a)
      • Threat
        • DUALS(2)
      • Vars
        • K(c);N_SPINS(a),S_FLIGHT::QAB(C)
      • Refutation
        • K(c);N_SPINS(a),S_FLIGHT
    • Try
      • Q(C);
      • Threat
        • DUALS(3)
      • Vars
        • S(a);XP(B)::S(F)
        • S(a);::S(F)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(C);
    • Threat
      • DUALS(2)
    • Vars
      • K(c);P_SPINS(a),S_FLIGHT::QAB(C)
      • K(c);S_FLIGHT::S(F)
      • S(a);XP(B)::QAB(C)
      • S(a);::QAB(C)
      • S(a);SBLOCK::S(F)
      • S(a);N_GUARD,SBLOCK::S(G)
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