MESON Chess Problem Database

Problem Display
PID: 110753 (8/8/Np6/8/B1k1P3/1N6/2nQ4/4n2K w - - 0 1)

Haring, Jacobus

3rd Prize, Sportowiec, 1955

8/8/Np6/8/B1k1P3/1N6/2nQ4/4n2K

#2

6 + 4

6490 yacpdb 2009
5454 Near Snap 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Sg2
      • 2.Qxc2#
    • 1...Sd3
      • 2.Qxc2#
    • 1...Sf3
      • 2.Qxc2#
    • 1...Sa1
      • 2.Qd4#
    • 1...Sa3
      • 2.Qd4#
    • 1...Se3
      • 2.Qd4#
    • 1...Sb4
      • 2.Qd4#
    • 1...Sd4
      • 2.Qxd4#
    • 1...b5
      • 2.Sa5#
  • Tries
    • 1.Kg1?
      • 1...Sg2
        • 2.Qxc2#
      • 1...Sd3
        • 2.Qxc2#
      • 1...Sa1
        • 2.Qd4#
      • 1...Sa3
        • 2.Qd4#
      • 1...Se3
        • 2.Qd4#
      • 1...Sb4
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#
      • 1...b5
        • 2.Sa5#
      • 1...Sf3+!
    • 1.Kh2?
      • 1...Sg2
        • 2.Qxc2#
      • 1...Sd3
        • 2.Qxc2#
      • 1...Sa1
        • 2.Qd4#
      • 1...Sa3
        • 2.Qd4#
      • 1...Se3
        • 2.Qd4#
      • 1...Sb4
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#
      • 1...b5
        • 2.Sa5#
      • 1...Sf3+!
    • 1.Sbc5?
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sg2
        • 2.Qd3#
      • 1...Sf3
        • 2.Qd3#
      • 1...Sa1
        • 2.Qb4#
      • 1...Sa3
        • 2.Qb4#
      • 1...Se3
        • 2.Qb4#
      • 1...Sb4
        • 2.Qxb4#
      • 1...Sd4
        • 2.Qb4#
      • 1...b5
        • 2.Bb3#
      • 1...bxc5!
    • 1.Qe2+?
      • 1...Sd3
        • 2.Qxc2#
      • 1...Kc3!
  • Keys
    • 1.Sc1!
      • 1...Sd3
        • 2.Qxd3#
      • 1...Sg2
        • 2.Qd3#
      • 1...Sf3
        • 2.Qd3#
      • 1...Sa1
        • 2.Qb4#
      • 1...Sa3
        • 2.Qb4#
      • 1...Se3
        • 2.Qb4#
      • 1...Sb4
        • 2.Qxb4#
      • 1...Sd4
        • 2.Qb4#
      • 1...b5
        • 2.Bb3#

Anticipated by 21724(1920)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 9
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAR2(B),XS(b)
    • S(b);N_GUARD::QAR1(B)
    • S(b);N_GUARD::QAR1(B),XS(b)
    • P(d);N_GUARD::S(C)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • S(a);N_GUARD::QAR2(B),XS(b)
        • S(b);N_GUARD::QAR1(B)
        • S(b);N_GUARD::QAR1(B),XS(b)
        • P(d);N_GUARD::S(C)
      • Refutation
        • S(a);CHECK
    • Try
      • K(A);P-FLIGHT
      • Vars
        • S(a);N_GUARD::QAR2(B),XS(b)
        • S(b);N_GUARD::QAR1(B)
        • S(b);N_GUARD::QAR1(B),XS(b)
        • P(d);N_GUARD::S(C)
      • Refutation
        • S(a);CHECK
    • Try
      • S(C);
      • Vars
        • S(a);N_GUARD::QAB1(B),XS(a)
        • S(a);N_GUARD::QAB1(B)
        • S(b);N_GUARD::QAR1(B)
        • S(b);N_GUARD::QAR1(B),XS(b)
        • S(b);N_GUARD,SBLOCK::QAR1(B)
        • P(d);SBLOCK::B(D)
      • Refutation
        • P(d);XS(C)
    • Try
      • Q(B);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAR2(B),XS(b)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • S(C);
    • Vars
      • S(a);N_GUARD::QAB1(B),XS(a)
      • S(a);N_GUARD::QAB1(B)
      • S(b);N_GUARD::QAR1(B)
      • S(b);N_GUARD::QAR1(B),XS(b)
      • S(b);N_GUARD,SBLOCK::QAR1(B)
      • P(d);SBLOCK::B(D)
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