MESON Chess Problem Database

Problem Display
PID: 234906 (8/2b5/2pP3K/2nBP1P1/p1qP1B1P/r1pR3N/r1k4P/nb1NQ2R w - - 0 1)

Haring, Jacobus

Skakbladet, 1972

8/2b5/2pP3K/2nBP1P1/p1qP1B1P/r1pR3N/r1k4P/nb1NQ2R

#2

14 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kb3
      • 2.Qxc3#
    • 1...Qb3
      • 2.Qe2#
    • 1...Qb5
      • 2.Qe2#
    • 1...Qa6
      • 2.Qe2#
    • 1...Qb4
      • 2.Qe2#
    • 1...Qxd4
      • 2.Qe2#
    • 1...Rb3
      • 2.Qe2#
  • Tries
    • 1.Se3+?
      • 1...Kb2
        • 2.Qxb1#
      • 1...Kb3
        • 2.Qxc3#
      • 1...Kxd3!
    • 1.Bxc4?
      • threat
        • 2.Qf2#
        • 2.Qe2#
      • 1...Sxd3
        • 2.Qe2#
      • 1...Sab3
        • 2.Rxc3#
        • 2.Qxc3#
      • 1...Scb3
        • 2.Rxc3#
        • 2.Qxc3#
      • 1...Se4!
    • 1.Qd2+?
      • 1...Kb3
        • 2.Qxc3#
      • 1...cxd2!
  • Keys
    • 1.Sdf2!
      • threat
        • 2.Qxb1#
      • 1...Kb2
        • 2.Qxb1#
      • 1...Kb3
        • 2.Qxc3#
      • 1...Qb3
        • 2.Qc1#
        • 2.Qe2#
      • 1...Qb5
        • 2.Qc1#
        • 2.Qe2#
      • 1...Qb4
        • 2.Qc1#
        • 2.Qe2#
      • 1...Rb2
        • 2.Qd1#
      • 1...Rb3
        • 2.Qc1#
        • 2.Qe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • K(d);P_SPINP(f),P_SPINQ(h),S_FLIGHT::QAR1(B),XP(f)
    • Q(h);::QAR2(B)
    • Q(h);XP(G)::QAR2(B)
    • R(e);SBLOCK::QAR2(B)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(d);P-FLIGHT::QAR1(B),XB(b)
        • K(d);P_SPINP(f),P_SPINQ(h),S_FLIGHT::QAR1(B),XP(f)
      • Refutation
        • K(d);S_FLIGHT,XR(E)
    • Try
      • B(J);XQ(h)
      • Threat
        • DUALS(2)
      • Vars
        • S(i);XR(E)::QAR2(B)
      • Refutation
        • S(i);
    • Try
      • Q(B);CHECK
      • Vars
        • K(d);P_SPINP(f),P_SPINQ(h),S_FLIGHT::QAR1(B),XP(f)
      • Refutation
        • P(f);XQ(B)
  • Actual
    • S(A);
    • Threat
      • QAB1(B),XB(b)
    • Vars
      • K(d);P-FLIGHT::QAR1(B),XB(b)
      • K(d);P_SPINP(f),P_SPINQ(h),S_FLIGHT::QAR1(B),XP(f)
      • R(c);SBLOCK::QAB1(B)
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