MESON Chess Problem Database

Problem Display
PID: 239570 (3b4/p1pB1nN1/3p1P2/1npk4/2N1rP2/1P2B3/2P3R1/2K4Q w - - 0 1)

Maleika, Gerhard

Die Schwalbe, 2002

3b4/p1pB1nN1/3p1P2/1npk4/2N1rP2/1P2B3/2P3R1/2K4Q

#2

11 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe3
      • 2.Rd2#
    • 1...Rxc4
      • 2.Rd2#
      • 2.Rg5#
    • 1...Rd4
      • 2.Rd2#
      • 2.Rg5#
    • 1...Rxf4
      • 2.Rd2#
      • 2.Rg5#
    • 1...Re5
      • 2.Rd2#
      • 2.Rg5#
    • 1...Re6
      • 2.Rd2#
      • 2.Rg5#
    • 1...Re7
      • 2.Rd2#
      • 2.Rg5#
    • 1...Re8
      • 2.Rd2#
      • 2.Rg5#
    • 1...Sa3
      • 2.Rd2#
    • 1...Sc3
      • 2.Rd2#
    • 1...Sg5
      • 2.Rxg5#
    • 1...Sh8
      • 2.Rg5#
  • Tries
    • 1.Be6+?
      • 1...Rxe6
        • 2.Rd2#
        • 2.Rg5#
      • 1...Kc6!
  • Keys
    • 1.Sa5!
      • threat
        • 2.Bc6#
      • 1...Rxe3
        • 2.Rd2#
      • 1...Rxf4
        • 2.Rg5#
      • 1...Sd4
        • 2.c4#
      • 1...Se5
        • 2.Be6#
      • 1...c6
        • 2.Bxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • R(a);XB(F)::QAB(B)+R(D),DCHECK
    • S(b);N_GUARD::R(D)
    • S(h);N_GUARD::R(D),XS(h)
    • S(h);N_GUARD::R(D)
  • Tries
    • Try
      • B(J);CHECK
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • S(G);
    • Threat
      • B(J)
    • Vars
      • R(a);XB(F)::QAB(B)+R(D),DCHECK
      • R(a);XP(H)::QAB(B)+R(D),DCHECK
      • S(b);S_CUTR(a)::P(C)
      • S(h);S_CUTR(a)::B(J)
      • P(g);::B(J),XP(g)
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