MESON Chess Problem Database

Problem Display
PID: 235184 (b7/5Np1/6rB/1p1P1PRB/RK1p1k2/3P2b1/2N2p1P/5nn1 w - - 0 1)

Groth, Reinhard

Schach, 1983

b7/5Np1/6rB/1p1P1PRB/RK1p1k2/3P2b1/2N2p1P/5nn1

#2

11 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2
      • 2.hxg3#
    • 1...Se3
      • 2.hxg3#
  • Tries
    • 1.Rg4+?
      • 1...Kf3
        • 2.Rxg3#
      • 1...Kxf5!
    • 1.Rxg6+?
      • 1...Kxf5
        • 2.Sxd4#
      • 1...gxh6!
  • Keys
    • 1.Se3!
      • threat
        • 2.Sg2#
      • 1...Kxe3
        • 2.Rxg3#
      • 1...Rxg5
        • 2.Bxg5#
      • 1...Bxd5
        • 2.Sxd5#
      • 1...Sxe3
        • 2.hxg3#
      • 1...dxe3
        • 2.Kxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • S(a);N_GUARD::P(B),XB(d)
  • Tries
    • Try
      • R(H);CHECK
      • Vars
        • K(f);P-FLIGHT::B(I)+R(H),DCHECK,XB(d)
      • Refutation
        • K(f);P-FLIGHT,XP(G)
    • Try
      • R(H);CHECK,XR(h)
      • Vars
        • K(f);P-FLIGHT,XP(G)::S(A),XP(e)
      • Refutation
        • P(i);XB(J)
  • Actual
    • S(A);
    • Threat
      • S(A)
    • Vars
      • K(f);S_FLIGHT,XS(A)::B(J)+R(H),DCHECK,XB(d)
      • R(h);OGATE,P_SPINR(h),XR(H)::B(J),XR(h)
      • B(j);XP(F)::S(A),XB(j)
      • S(a);N_GUARD,SBLOCK,XS(A)::P(B),XB(d)
      • P(e);SBLOCK,XS(A)::R(D)+K(E),XP(g)
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