MESON Chess Problem Database

Problem Display
PID: 17422 (1Q4b1/3rn3/1nBp3N/Nr6/3kPP2/4R1p1/5BK1/2R1b3 w - - 0 1)

Hartong, Jan

Probleemcomponisten IV, 1946

1Q4b1/3rn3/1nBp3N/Nr6/3kPP2/4R1p1/5BK1/2R1b3

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Sb3#
    • 1...Bc3
      • 2.Rxg3#
    • 1...Bb4
      • 2.Rxg3#
    • 1...Bxa5
      • 2.Rxg3#
    • 1...Bd5
      • 2.Qh8#
    • 1...Sbd5
      • 2.Rc4#
    • 1...Sed5
      • 2.Sf5#
    • 1...Sxc6
      • 2.Sxc6#
    • 1...d5
      • 2.Qe5#
  • Tries
    • 1.Rd1+?
      • 1...Bd2
        • 2.Rxg3#
      • 1...Kc5!
    • 1.Qxd6+?
      • 1...Rd5
        • 2.Sb3#
      • 1...Bd5
        • 2.Qe5#
        • 2.Qf6#
      • 1...Sbd5
        • 2.Rc4#
        • 2.Qe5#
      • 1...Sed5
        • 2.Sf5#
        • 2.Qe5#
      • 1...Rxd6!
  • Keys
    • 1.Rcc3!
      • threat
        • 2.Red3#
      • 1...Bxc3
        • 2.Rxg3#
      • 1...Sxc6
        • 2.Sxc6#
      • 1...Rd5
        • 2.Sb3#
      • 1...Bd5
        • 2.Qh8#
      • 1...Sbd5
        • 2.Rc4#
      • 1...Sed5
        • 2.Sf5#
      • 1...d5
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • R(d);N_GUARD,S_CUTB(i)::S(G)
    • B(a);N_GUARD::B(B)+R(D),XP(b)
    • B(a);N_GUARD,XS(G)::B(B)+R(D),XP(b)
    • B(i);OGATE,P_PINP(E)::QAB(J)
    • S(e);N_GUARD,S_CUTB(i)::R1(A)
    • S(h);N_GUARD,S_CUTR(d)::S(I)
    • S(h);XB(H)::S(G),XS(h)
    • P(f);OGATE::QAB1(J)
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • B(a);P_SPINB(a)::B(B)+R(D),XP(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(J);CHECK,XP(f)
      • Vars
        • R(d);P_SPINR(d)::S(G)
      • Refutation
        • R(g);XQ(J)
  • Actual
    • R(A);
    • Threat
      • B(B)+R(D),DCHECK
    • Vars
      • B(a);N_GUARD,XR(A)::B(B)+R(D),XP(b)
      • S(h);XB(H)::S(G),XS(h)
      • R(d);N_GUARD,S_CUTB(i)::S(G)
      • B(i);OGATE,P_PINP(E)::QAB(J)
      • S(e);N_GUARD,S_CUTB(i)::R1(A)
      • S(h);N_GUARD,S_CUTR(d)::S(I)
      • P(f);OGATE::QAB1(J)
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