MESON Chess Problem Database

Problem Display
PID: 77873 (3RB3/8/RN2Pp2/1pk1rQ1p/1p5K/3n2p1/3P4/7b w - - 0 1)

Buchner, Rudolf

Die Schwalbe, 1934

3RB3/8/RN2Pp2/1pk1rQ1p/1p5K/3n2p1/3P4/7b

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Qc2#
      • 2.d4#
    • 1...Se1
      • 2.d4#
    • 1...Sb2
      • 2.d4#
    • 1...Sf2
      • 2.Qc2#
      • 2.d4#
    • 1...Sf4
      • 2.Qc2#
      • 2.d4#
  • Tries
    • 1.Sa4+?
      • 1...Kc4
        • 2.Qxd3#
      • 1...bxa4!
    • 1.Qf2+?
      • 1...Re3
        • 2.Qxe3#
      • 1...Sxf2
        • 2.d4#
      • 1...gxf2!
    • 1.Qxe5+?
      • 1...Bd5
        • 2.Rxd5#
        • 2.Rc8#
        • 2.Qe3#
        • 2.Qxd5#
      • 1...Sxe5
        • 2.d4#
      • 1...fxe5!
  • Keys
    • 1.Qf4!
      • threat
        • 2.Qd4#
      • 1...Sxf4
        • 2.d4#
      • 1...Rd5
        • 2.Rc8#
      • 1...Re4
        • 2.Rd5#
      • 1...Be4
        • 2.Qe3#
      • 1...Bd5
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • S(b);OGATE::P(A)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(f);N_SPINR(g),P-FLIGHT::QAB1(C),XS(b)
      • Refutation
        • P(e);XS(E)
    • Try
      • Q(C);CHECK,N_PINR(g)
      • Vars
        • R(g);N_GUARD,P_SPINR(g)::QAB(C),XR(g)
        • S(b);OGATE,XQ(C)::P(A)
      • Refutation
        • P(c);XQ(C)
    • Try
      • Q(C);CHECK,XR(g)
      • Vars
        • S(b);OGATE,XQ(C)::P(A)
      • Refutation
        • P(i);XQ(C)
  • Actual
    • Q(C);N_PINR(g)
    • Threat
      • QAB1(C)
    • Vars
      • S(b);OGATE,XQ(C)::P(A)
      • R(g);S_CUTB(a)::R(G)
      • R(g);N_GUARD,P_PINQ(C),S_CUTB(a)::R1(G)
      • B(a);S_CUTR(g)::QAB(C)
      • B(a);SBLOCK::S(E)
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