MESON Chess Problem Database

Problem Display
PID: 64288 (2R1Qb2/5p1K/5rpB/6rB/2N5/Pp4q1/1p1n1p2/Rnk4b w - - 0 1)

Ellerman, Arnoldo

2nd HM.=, Good Companions (January), 1917

2R1Qb2/5p1K/5rpB/6rB/2N5/Pp4q1/1p1n1p2/Rnk4b

#2

8 + 13

3132 The Good Companion Two-Mover 1922
3391 Het Half Pin Thema 1924

SOLUTION

  • SOUND
  • Keys
    • 1.Qe2!
      • threat
        • 2.Qd1#
        • 2.Qxd2#
      • 1...Kc2
        • 2.Se3#
      • 1...Rxh5
        • 2.Qxd2#
      • 1...Sxc4
        • 2.Qd1#
      • 1...bxa1Q
        • 2.Qd1#
      • 1...bxa1S
        • 2.Qd1#
      • 1...bxa1B
        • 2.Qd1#
      • 1...bxa1R
        • 2.Qd1#
      • 1...gxh5
        • 2.Qxd2#
      • 1...f1Q
        • 2.Qxd2#
      • 1...f1S
        • 2.Qd1#
      • 1...f1R
        • 2.Qxd2#
      • 1...Qf4
        • 2.Qd1#
      • 1...Qd6
        • 2.Qd1#
      • 1...Qg1
        • 2.Qxd2#
      • 1...Qc3
        • 2.Qd1#
      • 1...Qd3
        • 2.Qd1#
      • 1...Qe3
        • 2.Qd1#
      • 1...Qf3
        • 2.Qxd2#
      • 1...Qg4
        • 2.Qxd2#
      • 1...Rg4
        • 2.Qxd2#
      • 1...Rd5
        • 2.Qd1#
      • 1...Rf3
        • 2.Qxd2#
      • 1...Rd6
        • 2.Qd1#
      • 1...Bf3
        • 2.Qxd2#
      • 1...Bb4
        • 2.Qd1#
      • 1...Sf1
        • 2.Qd1#
        • 2.Qxb2#
      • 1...Sf3
        • 2.Sd6#
      • 1...Se4
        • 2.Qd1#
        • 2.Qxb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 26
    • REMOVED MATES = 0
  • Sets
  • Actual
    • Q(H);
    • Threat
      • DUALS(2)
    • Vars
      • K(b);N_SPINS(a),P-FLIGHT,P_SPINS(e)::R(G)+S(C),DCHECK
      • R(i);P_PINB(E),XB(D)::QAB1(H),XS(e)
      • S(e);P_SPINR(i),XS(C)::QAR1(H)
      • P(d);N_SPINS(a),XR(A)::QAR1(H)
      • P(k);XB(D)::QAB1(H),XS(e)
      • P(f);::QAB1(H),XS(e)
      • P(f);::QAR1(H)
      • Q(h);::QAR1(H)
      • Q(h);::QAB1(H),XS(e)
      • R(i);::QAB1(H),XS(e)
      • R(i);::QAR1(H)
      • R(j);::QAB1(H),XS(e)
      • R(j);::QAR1(H)
      • B(c);::QAB1(H),XS(e)
      • B(m);::QAR1(H)
      • S(e);N_GUARD,P_SPINR(i),S_CUTB(c),S_CUTQ(h)::R(G)+S(C)
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