MESON Chess Problem Database

Problem Display
PID: 174239 (Q7/2pbp3/8/6p1/3k2r1/1P1N2R1/2KP4/3n1B2 w - - 0 1)

Buchner, Rudolf

Arbeiter Schachzeitung, 1926

Q7/2pbp3/8/6p1/3k2r1/1P1N2R1/2KP4/3n1B2

#2

7 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ba4
      • 2.Rxg4#
    • 1...Bb5
      • 2.Rxg4#
    • 1...Be8
      • 2.Rxg4#
    • 1...Sc3
      • 2.dxc3#
    • 1...Se3+
      • 2.dxe3#
    • 1...e6
      • 2.Rxg4#
  • Tries
    • 1.Qh8+?
      • 1...Ke4
        • 2.Qe5#
      • 1...e5
        • 2.Qxe5#
      • 1...Kd5!
  • Keys
    • 1.Bg2!
      • threat
        • 2.Qd5#
      • 1...Se3+
        • 2.dxe3#
      • 1...Re4
        • 2.Qxe4#
      • 1...Bc6
        • 2.Qa7#
      • 1...Be6
        • 2.Qh8#
      • 1...Sc3
        • 2.dxc3#
      • 1...c6
        • 2.Qa4#
      • 1...e6
        • 2.Rxg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • B(f);N_GUARD,P_PINP(D)::R(F),XR(c)
    • B(f);N_GUARD::R(F),XR(c)
    • S(a);OGATE::P(C),XS(a)
    • S(a);CHECK,OGATE::P(C),XS(a)
    • P(g);S_CUTB(f)::R(F),XR(c)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(G)
        • P(g);P_SPINP(g)::QAB1(G),XP(g)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • B(A);
    • Threat
      • QAR1(G)
    • Vars
      • S(a);CHECK,OGATE::P(C),XS(a)
      • R(c);N_GUARD::QAR1(G),XR(c)
      • B(f);S_CUTP(e)::QAB(G)
      • B(f);S_CUTP(g)::QAB(G)
      • S(a);OGATE::P(C),XS(a)
      • P(e);S_CUTB(f)::QAR(G)
      • P(g);S_CUTB(f)::R(F),XR(c)
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