MESON Chess Problem Database

Problem Display
PID: 45668 (1B6/Q5p1/2P1Kp2/5P1N/3Pk1BR/pR1ppp2/P7/1n1Nq2n w - - 0 1)

Hartong, Jan

The Problemist, 1958

1B6/Q5p1/2P1Kp2/5P1N/3Pk1BR/pR1ppp2/P7/1n1Nq2n

#2

12 + 10

3976 FIDE Album (1956-1958) 1961

SOLUTION

  • SOUND
  • Sets
    • 1...Qd2
      • 2.Bh3#
    • 1...Qc3
      • 2.Bh3#
    • 1...Qb4
      • 2.Bh3#
    • 1...Qa5
      • 2.Bh3#
    • 1...Qxd1
      • 2.Bh3#
    • 1...Qf1
      • 2.Bh3#
    • 1...Qe2
      • 2.Bh3#
    • 1...Sd2
      • 2.Sc3#
    • 1...Sf2
      • 2.Sg3#
    • 1...Sg3
      • 2.Bh3#
    • 1...f2
      • 2.Be2#
    • 1...g5
      • 2.Sxf6#
    • 1...g6
      • 2.Sxf6#
  • Tries
    • 1.Sc3+?
      • 1...Qxc3
        • 2.Bh3#
      • 1...Sxc3!
    • 1.Sg3+?
      • 1...Sxg3
        • 2.Bh3#
        • 2.Bh5#
      • 1...Qxg3!
    • 1.Qc5?
      • threat
        • 2.Qd5#
      • 1...Qa5
        • 2.Bh3#
      • 1...Sc3!
    • 1.Qa5?
      • threat
        • 2.Qd5#
      • 1...Kxd4
        • 2.Qd5#
      • 1...Qxa5
        • 2.Bh3#
      • 1...Sc3!
    • 1.Qd7?
      • threat
        • 2.Qd5#
      • 1...Qa5
        • 2.Bh3#
      • 1...Sc3!
  • Keys
    • 1.d5!
      • 1...Qxh4
        • 2.Rb4#
        • 2.Qxe3#
        • 2.Qa4#
      • 1...Qxd1
        • 2.Bh3#
        • 2.Rb4#
        • 2.Qa4#
      • 1...Qf2
        • 2.Rb4#
        • 2.Qa4#
      • 1...Qd2
        • 2.Bh3#
      • 1...Qc3
        • 2.Bh3#
        • 2.Qxe3#
      • 1...Qg3
        • 2.Rb4#
        • 2.Qxe3#
        • 2.Qa4#
      • 1...Qb4
        • 2.Bh3#
        • 2.Rxb4#
        • 2.Qxe3#
      • 1...Qa5
        • 2.Bh3#
        • 2.Qxe3#
      • 1...Qf1
        • 2.Bh3#
        • 2.Rb4#
        • 2.Qxe3#
        • 2.Qa4#
      • 1...Qg1
        • 2.Rb4#
        • 2.Qa4#
      • 1...Qe2
        • 2.Bh3#
        • 2.Rb4#
        • 2.Qa4#
      • 1...Sd2
        • 2.Sc3#
      • 1...Sc3
        • 2.Rb4#
      • 1...Sf2
        • 2.Sg3#
      • 1...Sg3
        • 2.Bh3#
      • 1...d2
        • 2.Qa4#
      • 1...e2
        • 2.Qe3#
      • 1...f2
        • 2.Be2#
      • 1...g5
        • 2.Sxf6#
      • 1...g6
        • 2.Sxf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • Q(b);N_GUARD::R(F)+B(E)
    • Q(b);N_GUARD,XS(A)::R(F)+B(E)
    • S(a);N_GUARD,S_CUTQ(b)::S(A)
    • S(c);N_GUARD,S_CUTQ(b)::S(H)
    • S(c);S_CUTQ(b)::R(F)+B(E)
    • P(g);OGATE::R(F)+B(E)
    • P(j);N_GUARD::S(H),XP(i)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • Q(b);XS(A)::R(F)+B(E)
      • Refutation
        • S(a);XS(A)
    • Try
      • S(H);CHECK
      • Refutation
        • Q(b);XS(H)
    • Try
      • Q(K);
      • Threat
        • QAB1(K)
      • Vars
        • Q(b);N_GUARD::R(F)+B(E)
      • Refutation
        • S(a);
    • Try
      • Q(K);
      • Threat
        • QAB1(K)
      • Vars
        • K(h);P-FLIGHT,XP(D)::QAR1(K)
        • Q(b);N_GUARD,XQ(K)::R(F)+B(E)
      • Refutation
        • S(a);
    • Try
      • Q(K);
      • Threat
        • QAB1(K)
      • Vars
        • Q(b);N_GUARD::R(F)+B(E)
      • Refutation
        • S(a);
  • Actual
    • P(D);
    • Vars
      • Q(b);N_GUARD::R(F)+B(E)
      • S(a);N_GUARD,S_CUTQ(b)::S(A)
      • S(a);S_CUTQ(b)::R(C)
      • S(c);N_GUARD,S_CUTQ(b)::S(H)
      • S(c);S_CUTQ(b)::R(F)+B(E)
      • P(e);S_CUTQ(b)::QAR(K)
      • P(f);S_CUTQ(b)::QAR1(K)
      • P(g);OGATE::R(F)+B(E)
      • P(j);N_GUARD::S(H),XP(i)
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