MESON Chess Problem Database

Problem Display
PID: 93252 (3Q2b1/8/3Np3/R1N1k3/1pP2p1p/1K2b2q/4R3/8 w - - 0 1)

Madsen, Arthur Valdemar

Arbejder-Skak, 1943

3Q2b1/8/3Np3/R1N1k3/1pP2p1p/1K2b2q/4R3/8

#2

7 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Sf7#
  • Tries
    • 1.Sd7+?
      • 1...Kxd6
        • 2.Se5#
        • 2.Sb8#
      • 1...Kd4!
    • 1.Sf7+?
      • 1...Kf5
        • 2.Qg5#
      • 1...Bxf7!
    • 1.Se8?
      • threat
        • 2.Qf6#
      • 1...Qf5
        • 2.Qd6#
      • 1...Kf5!
  • Keys
    • 1.Sde4!
      • threat
        • 2.Qf6#
      • 1...Bc1+
        • 2.Sd3#
      • 1...Bg1+
        • 2.Sd3#
      • 1...Bd2+
        • 2.Sd3#
      • 1...Bf2+
        • 2.Sd3#
      • 1...Bd4+
        • 2.Sd3#
      • 1...Bxc5+
        • 2.Sg3#
      • 1...Kf5
        • 2.Qg5#
      • 1...Qf5
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • K(f);N_SPINB(a),S_FLIGHT::QAR(G)+S(F)
  • Tries
    • Try
      • S(E);CHECK
      • Refutation
        • K(f);N_SPINB(a),S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(f);N_SPINB(a),P-FLIGHT::QAR1(G)
      • Refutation
        • B(h);XS(F)
    • Try
      • S(F);
      • Threat
        • QAB1(G)
      • Vars
        • Q(b);SBLOCK::QAB1(G)
      • Refutation
        • K(f);N_SPINB(a),P-FLIGHT
  • Actual
    • S(F);N_PINB(a)
    • Threat
      • QAB1(G)
    • Vars
      • B(a);CHECK::R(D)+S(E),DCHECK
      • B(a);CHECK,P_SPINB(a),XS(E)::R(A)+S(F)
      • K(f);P-FLIGHT::QAR1(G)
      • Q(b);SBLOCK::QAB1(G)
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