MESON Chess Problem Database

Problem Display
PID: 107826 (2b3B1/2pp1NQ1/7p/KPk3rR/1p3P2/4N3/2r5/2R1nnB1 w - - 0 1)

Buchner, Richard

Promadas, 1930

2b3B1/2pp1NQ1/7p/KPk3rR/1p3P2/4N3/2r5/2R1nnB1

#2

10 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Rxc4#
    • 1...Rd5
      • 2.Rxd5#
    • 1...Sg2
      • 2.Rxc2#
    • 1...Sd3
      • 2.Rxc2#
    • 1...Sf3
      • 2.Rxc2#
  • Tries
    • 1.Sf5+?
      • 1...Kd5
        • 2.Sxg5#
        • 2.S7d6#
      • 1...Rxg1
        • 2.Qd4#
      • 1...Se3
        • 2.Qd4#
      • 1...Kc4!
    • 1.Sxg5?
      • threat
        • 2.Se4#
      • 1...Kd6
        • 2.Sf5#
        • 2.Se4#
        • 2.Qe5#
        • 2.Qf8#
      • 1...hxg5!
    • 1.Rxg5+?
      • 1...d5
        • 2.Rxd5#
      • 1...hxg5!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Se4#
      • 1...Kxd6
        • 2.Qf8#
      • 1...cxd6
        • 2.Sxf1#
      • 1...Re5
        • 2.Qxe5#
      • 1...Bb7
        • 2.Sxb7#
      • 1...Sd2
        • 2.Sec4#
      • 1...Sg3
        • 2.Sef5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 5
  • Sets
    • R(c);OGATE::R1(A),XR(c)
    • R(f);OGATE::R1(G),XR(f)
    • S(a);N_GUARD::R(A),XR(c)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • R(f);XB(B)::QAB1(I)
        • S(b);P_SPINS(b)::QAB1(I)
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • S(H);XR(f)
      • Threat
        • R(G)+S(H),DCHECK
      • Refutation
        • P(g);P_SPINP(g),XS(H)
    • Try
      • R(G);CHECK,XR(f)
      • Vars
        • P(i);P_SPINP(i)::R1(G),XP(i)
      • Refutation
        • P(g);XR(G)
  • Actual
    • S(H);
    • Threat
      • S(H)
    • Vars
      • K(e);N_SPINR(c),OGATEB,P_PINP(F),S_FLIGHT,XS(H)::QAB(I)
      • P(h);SBLOCK,XS(H)::B(B)+S(C),XS(b)
      • R(f);N_GUARD::QAR2(I),XR(f)
      • B(j);N_GUARD::S(H),XB(j)
      • S(b);N_GUARD::B(B)+S(C)
      • S(b);N_GUARD,S_CUTR(f)::B(B)+S(C)
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