MESON Chess Problem Database

Problem Display
PID: 59831 (K2N4/8/1P1B1P2/2nkn1N1/R2P4/2p3r1/8/1Q1R4 w - - 0 1)

Widlert, Kjell Einar

3/4 Place, Nordiska Masterskapet, 1970

K2N4/8/1P1B1P2/2nkn1N1/R2P4/2p3r1/8/1Q1R4

#2

10 + 5

3751 FIDE Album (1968-1970) 1977

SOLUTION

  • SOUND
  • Tries
    • 1.Qe4+?
      • 1...Kxd6
        • 2.dxe5#
      • 1...Sxe4!
    • 1.Qf5?
      • threat
        • 2.Qxe5#
      • 1...Kxd6
        • 2.dxe5#
      • 1...Rxg5
        • 2.dxc5#
      • 1...Sxa4
        • 2.Qe6#
      • 1...Sd3
        • 2.Qe6#
      • 1...Sd7
        • 2.Qe6#
      • 1...Re3!
    • 1.dxc5+?
      • 1...Sd3
        • 2.Qa2#
        • 2.Qb3#
      • 1...Rd3!
    • 1.dxe5+?
      • 1...Sd3
        • 2.Qa2#
        • 2.Qb3#
        • 2.Qb5#
      • 1...Rd3!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Qxc5#
      • 1...Kxd6
        • 2.dxc5#
      • 1...Rxg5
        • 2.dxe5#
      • 1...Sd3
        • 2.Qc6#
      • 1...Sd7
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(d);P-FLIGHT,XB(G)::R(B)+P(D)DCHECK,XS(e)
      • Refutation
        • S(c);XQ(A)
    • Try
      • Q(A);P_PINS(e)
      • Threat
        • QAR1(A),XS(e)
      • Vars
        • K(d);N_SPINS(e),P-FLIGHT,XB(G)::R(B)+P(D)DCHECK,XS(e)
        • R(b);N_GUARD,XS(E)::R(B)+P(D),XS(c)
        • S(c);N_GUARD,XR(C)::QAB1(A)
        • S(c);N_GUARD::QAB1(A)
      • Refutation
        • R(b);
    • Try
      • P(D);CHECK,XS(c)
      • Refutation
        • R(b);P_SPINR(b)
    • Try
      • P(D);CHECK,XS(e)
      • Refutation
        • R(b);P_SPINR(b)
  • Actual
    • Q(A);P_PINS(c)
    • Threat
      • QAR1(A),XS(c)
    • Vars
      • K(d);N_SPINS(c),P-FLIGHT,XB(G)::R(B)+P(D)DCHECK,XS(c)
      • R(b);N_GUARD,XS(E)::R(B)+P(D),XS(e)
      • S(e);N_GUARD::QAB1(A)
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