MESON Chess Problem Database

Problem Display
PID: 91000 (3b1rn1/2RprkpP/2QR4/2Kp4/3PNN2/1B6/8/8 w - - 0 1)

Madsen, Arthur Valdemar

Die Schwalbe, 1937

3b1rn1/2RprkpP/2QR4/2Kp4/3PNN2/1B6/8/8

#2

9 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Rf6+?
      • 1...Ke8
        • 2.Sd6#
      • 1...Sxf6
        • 2.Sd6#
      • 1...gxf6!
    • 1.Rdxd7?
      • threat
        • 2.Qg6#
      • 1...Ke8
        • 2.Sd6#
        • 2.Rxe7#
      • 1...Rxd7
        • 2.Qe6#
      • 1...g6
        • 2.Qxg6#
      • 1...Sf6
        • 2.Sd6#
      • 1...Re8!
    • 1.Qxd5+?
      • 1...Re6
        • 2.Qxe6#
      • 1...Ke8!
  • Keys
    • 1.Rxd5!
      • threat
        • 2.Qg6#
      • 1...d6+
        • 2.Rxd6#
      • 1...Ke8
        • 2.Sd6#
      • 1...Rxe4
        • 2.Re5#
      • 1...dxc6
        • 2.Rxd8#
      • 1...Re5
        • 2.Rxe5#
      • 1...Re6
        • 2.Qxe6#
      • 1...g6
        • 2.Qxg6#
      • 1...Ree8
        • 2.Rdxd7#
      • 1...Rfe8
        • 2.Rf5#
      • 1...Sf6
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • K(d);N_SPINP(a),P_SPINP(b),S_FLIGHT::S(C)
        • S(h);SBLOCK,XR(G)::S(C)
      • Refutation
        • P(e);XR(G)
    • Try
      • R(G);P_PINR(c),XP(b)
      • Threat
        • QAB1(F)
      • Vars
        • R(c);XR(G)::QAB1(F)
        • P(e);::QAB1(F),XP(e)
        • S(h);SBLOCK::S(C)
      • Refutation
        • R(g);
    • Try
      • Q(F);CHECK,XP(a)
      • Vars
        • R(c);N_GUARD,P_SPINP(b),P_SPINR(c)::QAB1(F),XR(c)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • R(G);XP(a)
    • Threat
      • QAB1(F)
    • Vars
      • P(b);CHECK,P_SPINR(c)::B(A)+R(G),XP(b)
      • K(d);P_SPINP(b),S_FLIGHT::S(C)
      • R(c);N_GUARD,P_SPINP(b),XS(C)::B(A)+R(G)
      • P(b);OGATE,P_SPINR(c),XQ(F)::B(A)+R(G),XB(f)
      • R(c);N_GUARD,P_PINR(G),P_SPINP(b)::B(A)+R(G),XR(c)
      • R(c);N_GUARD,P_SPINP(b)::QAB1(F),XR(c)
      • P(e);::QAB1(F),XP(e)
      • R(c);P_SPINP(b),SBLOCK::B(A)+R(G),DCHECK,XP(b)
      • R(g);SBLOCK::B(A)+R(G),DCHECK
      • S(h);SBLOCK::S(C)
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