MESON Chess Problem Database

Problem Display
PID: 162433 (8/5PK1/3r1p2/4k1pR/2Q1N1n1/b1P3rB/7B/4qR2 w - - 0 1)

Knuppert, Hugo

Thomas, Georg

2nd Prize, DSK 19. TT, 1940

8/5PK1/3r1p2/4k1pR/2Q1N1n1/b1P3rB/7B/4qR2

#2

9 + 8

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.Bxg3#
    • 1...Qb1
      • 2.Bxg3#
    • 1...Qd1
      • 2.Bxg3#
    • 1...Qe2
      • 2.Bxg3#
    • 1...Re6
      • 2.Qd4#
    • 1...Sf2
      • 2.Bxg3#
    • 1...Sxh2
      • 2.Rf5#
  • Tries
    • 1.Rxg5+?
      • 1...f5
        • 2.Rfxf5#
        • 2.Rgxf5#
      • 1...fxg5!
  • Keys
    • 1.Sxg5!
      • threat
        • 2.Sf3#
      • 1...Sxh2
        • 2.Rf5#
      • 1...fxg5
        • 2.Rxg5#
      • 1...Rd1
        • 2.Qe6#
      • 1...Rd2
        • 2.Qe6#
      • 1...Rd3
        • 2.Qe6#
      • 1...Rd4
        • 2.Qe6#
        • 2.Qxd4#
      • 1...Rd5
        • 2.Qf4#
      • 1...Ra6
        • 2.Qd4#
      • 1...Rb6
        • 2.Qd4#
      • 1...Rc6
        • 2.Qd4#
      • 1...Re6
        • 2.Qxe6#
        • 2.Qd4#
      • 1...Rd7
        • 2.Qe6#
      • 1...Rd8
        • 2.Qe6#
      • 1...Qe4
        • 2.Qxe4#
      • 1...Sf2
        • 2.Bxg3#
      • 1...Se3
        • 2.Qe4#
      • 1...Sh6
        • 2.Rxe1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 13
    • REMOVED MATES = 5
  • Sets
    • Q(a);N_GUARD::B(B),XR(c)
    • R(g);N_GUARD,SBLOCK::QAB1(E)
    • S(d);S_CUTQ(a)::B(B),XR(c)
    • S(d);N_SPINR(c),XB(B)::R1(A)
  • Tries
    • Try
      • R(G);CHECK,XP(f)
      • Refutation
        • P(h);XR(G)
  • Actual
    • S(F);XP(f)
    • Threat
      • R(G)+S(F),DCHECK
    • Vars
      • S(d);N_SPINR(c),P_PINS(F),XB(B)::R1(A)
      • P(h);OGATE,P_SPINP(h),XS(F)::R(G),XP(h)
      • R(g);N_GUARD::QAR1(E)
      • R(g);SBLOCK::QAB1(E)
      • R(g);N_GUARD::QAB1(E)
      • R(g);N_GUARD,P_PINP(H)::QAR1(E)
      • Q(a);N_GUARD::QAR1(E),XQ(a)
      • S(d);P_PINS(F),S_CUTQ(a)::B(B),XR(c)
      • S(d);P_PINS(F),S_CUTQ(a)::QAR1(E)
      • S(d);N_GUARD,P_PINS(F)::R(A),XQ(a)
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