MESON Chess Problem Database

Problem Display
PID: 110589 (8/2n5/4pR2/n1pp2N1/6P1/2p1k1P1/2KNBRP1/7Q w - - 0 1)

Haring, Jacobus

3rd HM., Kolnische Rundschau, 1969

8/2n5/4pR2/n1pp2N1/6P1/2p1k1P1/2KNBRP1/7Q

#2

10 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...d4
      • 2.Sf1#
      • 2.R6f3#
  • Tries
    • 1.Sb3?
      • threat
        • 2.R6f3#
        • 2.Qc1#
      • 1...Sc4
        • 2.R6f3#
      • 1...Sxb3!
    • 1.R2f3+?
      • 1...Kxe2
        • 2.Qd1#
        • 2.Qf1#
      • 1...Kd4!
    • 1.Qa1?
      • threat
        • 2.Qxc3#
      • 1...Kd4
        • 2.Qxc3#
      • 1...cxd2
        • 2.R6f3#
        • 2.Qc3#
        • 2.Qe5#
      • 1...d4
        • 2.Sf1#
        • 2.R6f3#
      • 1...Sb5!
    • 1.Qc1?
      • threat
        • 2.Sb3#
      • 1...Kd4
        • 2.Sdf3#
      • 1...cxd2
        • 2.Qxd2#
      • 1...Sb3
        • 2.Sxb3#
      • 1...Sc4!
    • 1.Qh6?
      • threat
        • 2.Sxe6#
      • 1...Kd4
        • 2.Sgf3#
      • 1...e5
        • 2.Se6#
      • 1...cxd2!
    • 1.Qh8?
      • threat
        • 2.R6f3#
      • 1...Kd4
        • 2.Rxe6#
      • 1...e5!
  • Keys
    • 1.Qd1!
      • threat
        • 2.Sf1#
      • 1...Kd4
        • 2.Sc4#
      • 1...cxd2
        • 2.Qxd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(c);::R1(J)
      • Refutation
        • S(c);XS(C)
    • Try
      • R(E);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR2(A),XP(a)
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::QAB1(A),XP(a)
      • Refutation
        • S(g);
    • Try
      • Q(A);
      • Threat
        • QAB(A)+S(C)
      • Vars
        • K(b);S_FLIGHT::S(C)
        • P(a);OGATE,P_SPINP(a),XS(C)::QAB1(A),XP(a)
        • S(c);::QAB(A)+S(C),XS(c)
      • Refutation
        • S(c);
    • Try
      • Q(A);
      • Threat
        • QAB(A)+S(I),XP(f)
      • Vars
        • K(b);S_FLIGHT::S(I)
        • P(f);::QAB(A)+S(I)
      • Refutation
        • P(a);XS(C)
    • Try
      • Q(A);
      • Threat
        • R1(J)
      • Vars
        • K(b);S_FLIGHT::QAB(A)+R(J),XP(f)
      • Refutation
        • P(f);
  • Actual
    • Q(A);
    • Threat
      • S(C)
    • Vars
      • K(b);S_FLIGHT::QAR(A)+S(C)
      • P(a);OGATE,XS(C)::QAB1(A),XP(a)
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