MESON Chess Problem Database

Problem Display
PID: 17696 (8/3B4/p7/pq6/k3p1K1/p1P1p3/p1P1n3/n2Q4 w - - 0 1)

Mikan, Ilja

Straz severu, 1948

8/3B4/p7/pq6/k3p1K1/p1P1p3/p1P1n3/n2Q4

#2

5 + 10

5505 Dobrodruzstvi 64 poli 1973

SOLUTION

  • SOUND
  • Sets
    • 1...Qc6
      • 2.Bxc6#
    • 1...Qxd7+
      • 2.Qxd7#
    • 1...Sxc2
      • 2.Qxc2#
    • 1...Sb3
      • 2.cxb3#
    • 1...Sc1
      • 2.Qd4#
    • 1...Sg1
      • 2.Qd4#
    • 1...Sxc3
      • 2.Qd4#
    • 1...Sg3
      • 2.Qd4#
    • 1...Sd4
      • 2.Qxd4#
    • 1...Sf4
      • 2.Qd4#
  • Tries
    • 1.Bc6?
      • 1...Sxc2
        • 2.Qxc2#
      • 1...Sxc3
        • 2.Qd4#
      • 1...Sb3
        • 2.cxb3#
      • 1...Sc1
        • 2.Qd4#
      • 1...Sg1
        • 2.Qd4#
      • 1...Sg3
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sf4
        • 2.Qd4#
      • 1...Qxc6!
    • 1.Be8?
      • 1...Qd7+
        • 2.Bxd7#
        • 2.Qxd7#
      • 1...Sxc2
        • 2.Qxc2#
      • 1...Sxc3
        • 2.Qd4#
      • 1...Qc6
        • 2.Bxc6#
      • 1...Sb3
        • 2.cxb3#
      • 1...Sc1
        • 2.Qd4#
      • 1...Sg1
        • 2.Qd4#
      • 1...Sg3
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sf4
        • 2.Qd4#
      • 1...Qxe8!
    • 1.Qxe2?
      • threat
        • 2.Qc4#
      • 1...Sxc2
        • 2.Qxc2#
      • 1...Qxd7+!
    • 1.Qd3?
      • threat
        • 2.Qc4#
      • 1...Qxd7+
        • 2.Qxd7#
      • 1...Sxc2
        • 2.Qxc2#
      • 1...exd3!
    • 1.Qd5?
      • threat
        • 2.Qc4#
      • 1...Qxd7+
        • 2.Qxd7#
      • 1...Sxc2!
  • Keys
    • 1.Kh4!
      • 1...Qxd7
        • 2.Qxd7#
      • 1...Sxc2
        • 2.Qxc2#
      • 1...Sxc3
        • 2.Qd4#
      • 1...Qc6
        • 2.Bxc6#
      • 1...Sb3
        • 2.cxb3#
      • 1...Sc1
        • 2.Qd4#
      • 1...Sg1
        • 2.Qd4#
      • 1...Sg3
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sf4
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • Q(i);OGATEB::B(E),XQ(i)
    • Q(i);CHECK,N_SPINQ(i),OGATE,XB(E)::QAB(A),XQ(i)
    • S(a);OGATE,P_SPINS(a),XP(B)::QAB(A),XS(a)
    • S(a);OGATE::P(B),XS(a)
    • S(c);N_GUARD::QAR(A)
    • S(c);N_GUARD,XP(C)::QAR(A)
    • S(c);N_GUARD::QAR(A),XS(c)
  • Tries
    • Try
      • B(E);
      • Vars
        • S(a);OGATE,P_SPINS(a),XP(B)::QAB(A),XS(a)
        • S(c);N_GUARD,XP(C)::QAR(A)
        • S(a);OGATE::P(B),XS(a)
        • S(c);N_GUARD::QAR(A)
        • S(c);N_GUARD::QAR(A),XS(c)
      • Refutation
        • Q(i);N_SPINQ(i),XB(E)
    • Try
      • B(E);
      • Vars
        • S(a);OGATE,P_SPINS(a),XP(B)::QAB(A),XS(a)
        • S(c);N_GUARD,XP(C)::QAR(A)
        • Q(i);OGATEB::B(E),XQ(i)
        • S(a);OGATE::P(B),XS(a)
        • S(c);N_GUARD::QAR(A)
        • S(c);N_GUARD::QAR(A),XS(c)
      • Refutation
        • Q(i);N_SPINQ(i),XB(E)
    • Try
      • Q(A);XS(c)
      • Threat
        • QAR2(A)
      • Vars
        • S(a);OGATE,XP(B)::QAB(A),XS(a)
      • Refutation
        • Q(i);CHECK,N_SPINQ(i),XB(E)
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • Q(i);CHECK,N_SPINQ(i),OGATE,XB(E)::QAB(A),XQ(i)
        • S(a);OGATE,XP(B)::QAB(A),XS(a)
      • Refutation
        • P(g);XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • Q(i);CHECK,N_SPINQ(i),OGATE,XB(E)::QAB(A),XQ(i)
      • Refutation
        • S(a);XP(B)
  • Actual
    • K(D);P-FLIGHT
    • Vars
      • Q(i);N_SPINQ(i),OGATE,XB(E)::QAB(A),XQ(i)
      • S(a);OGATE,P_SPINS(a),XP(B)::QAB(A),XS(a)
      • S(c);N_GUARD,XP(C)::QAR(A)
      • Q(i);OGATEB::B(E),XQ(i)
      • S(a);OGATE::P(B),XS(a)
      • S(c);N_GUARD::QAR(A)
      • S(c);N_GUARD::QAR(A),XS(c)
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