MESON Chess Problem Database

Problem Display
PID: 64109 (q6b/1B3n2/2R1Q3/1p2pPp1/3Pk1N1/6K1/1P2pBp1/2N2br1 w - - 0 1)

Haring, Jacobus

3rd Prize, Schach-Echo, 1978

q6b/1B3n2/2R1Q3/1p2pPp1/3Pk1N1/6K1/1P2pBp1/2N2br1

#2

10 + 11

3750 FIDE Album (1977-1979) 1984

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.Rc2#
      • 2.Rc3#
      • 2.Rc4#
      • 2.Rc5#
      • 2.Ra6#
      • 2.Rb6#
      • 2.Rd6#
      • 2.Rc7#
      • 2.Rc8#
    • 1...Qa2
      • 2.Rc4#
    • 1...Qa3+
      • 2.Rc3#
    • 1...Qa4
      • 2.Rc2#
      • 2.Rc3#
      • 2.Rc4#
      • 2.Rc5#
      • 2.Ra6#
      • 2.Rb6#
      • 2.Rd6#
      • 2.Rc7#
      • 2.Rc8#
    • 1...Qa5
      • 2.Rc2#
      • 2.Rc3#
      • 2.Rc4#
      • 2.Rc5#
      • 2.Ra6#
      • 2.Rb6#
      • 2.Rd6#
      • 2.Rc7#
      • 2.Rc8#
    • 1...Qa6
      • 2.Rxa6#
    • 1...Qc8
      • 2.Rxc8#
    • 1...Qd8
      • 2.Rd6#
    • 1...Qf8
      • 2.Rc2#
      • 2.Rc3#
      • 2.Rc4#
      • 2.Rc5#
      • 2.Ra6#
      • 2.Rb6#
      • 2.Rd6#
      • 2.Rc7#
      • 2.Rc8#
    • 1...Qg8
      • 2.Rc2#
      • 2.Rc3#
      • 2.Rc4#
      • 2.Rc5#
      • 2.Ra6#
      • 2.Rb6#
      • 2.Rd6#
      • 2.Rc7#
      • 2.Rc8#
    • 1...Bf6
      • 2.Sxf6#
  • Tries
    • 1.Sb3?
      • threat
        • 2.Sc5#
      • 1...Kd3
        • 2.Rc3#
      • 1...Qa3
        • 2.Rc3#
      • 1...Qf8
        • 2.Rc3#
      • 1...Qa7!
    • 1.Bxa8?
      • threat
        • 2.Rc2#
        • 2.Rc3#
        • 2.Rc4#
        • 2.Rc5#
        • 2.Ra6#
        • 2.Rb6#
        • 2.Rd6#
        • 2.Rc7#
        • 2.Rc8#
      • 1...Sd6
        • 2.Rxd6#
      • 1...Sd8!
    • 1.Qb3?
      • threat
        • 2.Qf3#
      • 1...Kxf5
        • 2.Qf3#
      • 1...Qa3
        • 2.Rf6#
      • 1...e1S!
    • 1.Qd5+?
      • 1...Kxf5
        • 2.Se3#
        • 2.Qf3#
      • 1...Kxd5!
  • Keys
    • 1.Se3!
      • threat
        • 2.Qd5#
      • 1...Kxd4
        • 2.Qd5#
      • 1...Qa2
        • 2.Rc4#
      • 1...Qd8
        • 2.Rd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • Q(j);N_GUARD::B(J)+R(H)
    • Q(j);CHECK,N_GUARD::B(J)+R(H)
    • Q(j);N_GUARD::B(J)+R(H),XQ(j)
    • B(k);N_GUARD::S(F),XB(k)
  • Tries
    • Try
      • S(A);
      • Threat
        • S(A)
      • Vars
        • K(e);N_SPINP(g),S_FLIGHT::R1(H)
        • Q(j);N_GUARD,P_PINS(A)::B(J)+R(H)
        • Q(j);N_GUARD::B(J)+R(H)
      • Refutation
        • Q(j);
    • Try
      • B(J);XQ(j)
      • Threat
        • DUALS(9)
      • Vars
        • S(i);::B(J)+R(H),XS(i)
      • Refutation
        • S(i);
    • Try
      • Q(I);N_PINP(g)
      • Threat
        • QAB1(I)
      • Vars
        • K(e);S_FLIGHT,XP(G)::QAR2(I)
        • Q(j);N_GUARD,P_PINQ(I)::B(J)+R(H)
      • Refutation
        • P(c);
    • Try
      • Q(I);CHECK,N_PINP(g)
      • Refutation
        • K(e);S_FLIGHT,XQ(I)
  • Actual
    • S(F);
    • Threat
      • QAB1(I)
    • Vars
      • K(e);N_SPINP(g),P-FLIGHT,XP(E)::QAR1(I)
      • Q(j);N_GUARD::B(J)+R(H)
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