MESON Chess Problem Database

Problem Display
PID: 81434 (8/Bn2p2P/N1Qb4/1r4R1/1p6/1P1k2r1/1np1p1N1/q2bK3 w - - 0 1)

Hartong, Jan

2nd HM.=, British Chess Magazine, 1951

8/Bn2p2P/N1Qb4/1r4R1/1p6/1P1k2r1/1np1p1N1/q2bK3

#2

8 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Rxg2
      • 2.Qf3#
    • 1...Rf3
      • 2.Qxf3#
    • 1...Rg4
      • 2.Qf3#
    • 1...Rgxg5
      • 2.Qf3#
    • 1...Re5
      • 2.Sf4#
    • 1...Bf4
      • 2.Sxf4#
    • 1...Sa4
      • 2.Qc4#
    • 1...Sc4
      • 2.Qxc4#
    • 1...e5
      • 2.Rxg3#
  • Tries
    • 1.Qxb5+?
      • 1...Ke4
        • 2.Qd5#
        • 2.Qf5#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Kc3!
  • Keys
    • 1.h8Q!
      • threat
        • 2.Qd4#
      • 1...Rd5
        • 2.Qxd5#
      • 1...Rg4
        • 2.Qf3#
      • 1...Rc5
        • 2.Sxb4#
      • 1...Re5
        • 2.Sf4#
      • 1...Rb6
        • 2.Qd5#
      • 1...Bc5
        • 2.Qg6#
      • 1...Be5
        • 2.Qh7#
      • 1...Sa4
        • 2.Qc4#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sc5
        • 2.Qd5#
      • 1...e5
        • 2.Rxg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 4
  • Sets
    • R(g);N_GUARD,XS(B)::QAR2(F)
    • R(g);N_GUARD::QAR2(F),XR(g)
    • R(g);N_GUARD::QAR2(F)
    • R(g);N_GUARD,XR(D)::QAR2(F)
    • R(i);S_CUTB(j)::S(B)
    • B(j);N_GUARD::S(B),XB(j)
    • S(c);N_GUARD::QAB1(F)
    • S(c);N_GUARD::QAB1(F),XS(c)
    • P(l);S_CUTB(j)::R(D),XR(g)
  • Tries
    • Try
      • Q(F);CHECK,XR(i)
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAB1(F),XS(c)
      • Refutation
        • K(f);P-FLIGHT
  • Actual
    • P(H);
    • Threat
      • QAR1(H)
    • Vars
      • R(i);N_GUARD::QAR2(F),XR(i)
      • R(g);N_GUARD::QAR2(F)
      • R(i);N_GUARD,S_CUTB(j)::S(E),XP(h)
      • R(i);S_CUTB(j)::S(B)
      • R(i);N_GUARD::QAR2(F)
      • B(j);OGATE::QAB(F)
      • B(j);S_CUTR(i)::QAB(H)
      • S(c);N_GUARD::QAB1(F)
      • S(c);N_GUARD::QAB1(F),XS(c)
      • S(k);S_CUTR(i)::QAR2(F)
      • P(l);S_CUTB(j)::R(D),XR(g)
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