MESON Chess Problem Database

Problem Display
PID: 198123 (7n/B3Q3/3Nb3/R2Nk2p/K4Rrr/pp1p2pB/1q1n3p/8 w - - 0 1)

Goethart, Gerhardus Hendrik

Hampshire Telegraph and Post, 1920

7n/B3Q3/3Nb3/R2Nk2p/K4Rrr/pp1p2pB/1q1n3p/8

#2

8 + 13

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qc1
      • 2.Bd4#
    • 1...Qd4+
      • 2.Bxd4#
    • 1...Qb1
      • 2.Bd4#
    • 1...Qa2
      • 2.Bd4#
    • 1...Qc2
      • 2.Bd4#
    • 1...Rxf4+
      • 2.Sb4#
    • 1...Rg5
      • 2.Qxe6#
    • 1...Rg7
      • 2.Qxe6#
    • 1...Rg8
      • 2.Qxe6#
    • 1...Sb1
      • 2.Sc4#
    • 1...Sf1
      • 2.Sc4#
    • 1...Sf3
      • 2.Sc4#
    • 1...Sc4
      • 2.Sxc4#
      • 2.Rf5#
    • 1...Se4
      • 2.Sc4#
      • 2.Rf5#
    • 1...Sg6
      • 2.Sf7#
    • 1...Sf7
      • 2.Sxf7#
  • Tries
    • 1.Bxg4?
      • threat
        • 2.Rf5#
        • 2.Qxe6#
      • 1...Qd4+
        • 2.Bxd4#
      • 1...hxg4
        • 2.Rf5#
      • 1...Rxg4!
    • 1.Qg7+?
      • 1...Kxd6
        • 2.Qc7#
      • 1...Rxg7!
  • Keys
    • 1.Kb5!
      • threat
        • 2.Rf5#
      • 1...Kxd5
        • 2.Kb6#
      • 1...Rxf4
        • 2.Qxe6#
      • 1...Rg5
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 12
  • Sets
    • Q(a);N_GUARD::B(G)
    • Q(a);CHECK,N_GUARD,N_PINR(C)::B(G),XQ(a)
    • R(h);CHECK,SBLOCK,XR(C)::R(D)+S(E)
    • R(h);::QAR1(H),XB(l)
    • S(b);N_GUARD::S(F)
    • S(m);N_GUARD::S(F)
    • S(m);N_GUARD::S(F),XS(m)
  • Tries
    • Try
      • B(A);N_SPINR(C),XR(h)
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);CHECK,N_GUARD::B(G),XQ(a)
        • P(k);XB(A)::R1(C)
      • Refutation
        • R(i);P_PINR(C),XB(A)
    • Try
      • Q(H);CHECK,N_PINB(l)
      • Vars
        • K(j);OGATEB,S_FLIGHT,XS(F)::QAB1(H)
      • Refutation
        • R(h);XQ(H)
  • Actual
    • K(B);N_SPINR(C),S_FLIGHT
    • Threat
      • R1(C)
    • Vars
      • K(j);N_SPINB(l),P-FLIGHT,XS(E)::R(D)+K(B)
      • R(h);XR(C)::QAR1(H),XB(l)
      • R(h);::QAR1(H),XB(l)
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