MESON Chess Problem Database

Problem Display
PID: 223148 (8/2K5/8/2Np1b2/1p1kNP2/4p3/1P2Q3/4n3 w - - 0 1)

Mandal, H

Tidskrift for Schack, 1910

8/2K5/8/2Np1b2/1p1kNP2/4p3/1P2Q3/4n3

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe4
      • 2.Sb3#
      • 2.Se6#
    • 1...Sc2
      • 2.Qd3#
    • 1...Sg2
      • 2.Qd3#
    • 1...Sd3
      • 2.Qxd3#
    • 1...Sf3
      • 2.Qd3#
  • Tries
    • 1.Sd6?
      • threat
        • 2.Sb3#
      • 1...Bc2
        • 2.Se6#
      • 1...b3
        • 2.Sxb3#
      • 1...Kxc5!
    • 1.Qd1+?
      • 1...Sd3
        • 2.Qxd3#
      • 1...Kc4!
    • 1.Qb5?
      • threat
        • 2.Qxb4#
      • 1...dxe4
        • 2.Sb3#
      • 1...Sc2
        • 2.Qd3#
      • 1...Sd3
        • 2.Qxd3#
      • 1...b3
        • 2.Qa4#
        • 2.Qb4#
      • 1...e2!
    • 1.Qxe3+?
      • 1...Kc4
        • 2.Sd6#
      • 1...Kxe3!
    • 1.b3?
      • threat
        • 2.Qb2#
      • 1...dxe4
        • 2.Qc4#
      • 1...Sc2
        • 2.Qd1#
        • 2.Qd3#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Bxe4!
  • Keys
    • 1.Sd2!
      • threat
        • 2.Sdb3#
        • 2.Scb3#
      • 1...Kxc5
        • 2.Sb3#
      • 1...exd2
        • 2.Sb3#
      • 1...Bc2
        • 2.Se6#
      • 1...Bd3
        • 2.Scb3#
        • 2.Se6#
      • 1...Sd3
        • 2.Scb3#
      • 1...b3
        • 2.Sdxb3#
        • 2.Scxb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • S(a);N_GUARD::QAR1(B)
    • S(a);N_GUARD::QAR1(B),XS(a)
  • Tries
    • Try
      • S(C);
      • Threat
        • S(E)
      • Vars
        • B(f);N_GUARD::S(E)
        • P(c);::S(E),XP(c)
      • Refutation
        • K(d);S_FLIGHT,XS(E)
    • Try
      • Q(B);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAR1(B),XS(a)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAR2(B),XP(c)
      • Vars
        • P(e);SBLOCK,XS(C)::S(E)
        • S(a);N_GUARD::QAR1(B)
        • S(a);N_GUARD::QAR1(B),XS(a)
      • Refutation
        • P(b);
    • Try
      • Q(B);CHECK,XP(b)
      • Vars
        • K(d);P-FLIGHT::S(C)
      • Refutation
        • K(d);S_FLIGHT,XQ(B)
    • Try
      • P(A);
      • Threat
        • QAB(B)
      • Vars
        • P(e);N_GUARD,XS(C)::QAR1(B)
        • S(a);N_GUARD::QAR1(B),XS(a)
      • Refutation
        • B(f);XS(C)
  • Actual
    • S(C);
    • Threat
      • DUALS(2)
    • Vars
      • K(d);S_FLIGHT,XS(E)::S(C)
      • P(b);XS(C)::S(E)
      • B(f);N_GUARD::S(E)
      • S(a);::S(E)
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