MESON Chess Problem Database

Problem Display
PID: 91294 (8/bB6/2n2R2/n1N1kb2/4pp1B/2R5/2NPQ3/6K1 w - - 0 1)

Volkmann, Albert

Die Schwalbe, 1949

8/bB6/2n2R2/n1N1kb2/4pp1B/2R5/2NPQ3/6K1

#2

9 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bh3
      • 2.Qxe4#
    • 1...Bg4
      • 2.Qxe4#
    • 1...Bd7
      • 2.Qxe4#
    • 1...Bc8
      • 2.Qxe4#
    • 1...Bxc5+
      • 2.Rxc5#
    • 1...Sb4
      • 2.d4#
    • 1...Sd4
      • 2.Sd3#
    • 1...Se7
      • 2.d4#
    • 1...Sb8
      • 2.d4#
    • 1...Sd8
      • 2.d4#
  • Tries
    • 1.Rxf5+?
      • 1...Kxf5
        • 2.Qh5#
      • 1...Kd6!
    • 1.d4+?
      • 1...Sxd4
        • 2.Sd3#
      • 1...Kd5!
  • Keys
    • 1.Qh5!
      • threat
        • 2.Qxf5#
      • 1...Bxc5+
        • 2.Rxc5#
      • 1...Kd5
        • 2.Qxf5#
      • 1...Sd4
        • 2.Sd7#
      • 1...Se7
        • 2.Re6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • B(e);N_GUARD::QAR1(D),XP(a)
    • B(g);CHECK,OGATE,XS(G)::R(E),XB(g)
    • S(f);N_GUARD::P(C)
    • S(f);N_PINS(G)::S(G)
  • Tries
    • Try
      • R(H);CHECK,XB(e)
      • Vars
        • K(d);N_SPINP(a),P-FLIGHT,XR(H)::QAR2(D)
      • Refutation
        • K(d);N_SPINP(a),S_FLIGHT
    • Try
      • P(C);CHECK,N_SPINS(G)
      • Vars
        • S(f);XP(C)::S(G)
      • Refutation
        • K(d);N_SPINP(a),P-FLIGHT,P_SPINS(f)
  • Actual
    • Q(D);N_PINP(a),P_PINB(e)
    • Threat
      • QAR1(D),XB(e)
    • Vars
      • B(g);CHECK,OGATE,XS(G)::R(E),XB(g)
      • K(d);P-FLIGHT,P_SPINS(f)::QAR2(D),XB(e)
      • S(f);N_PINS(G)::S(G)
      • S(f);::R1(H)
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Developed and maintained by Brian Stephenson.
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