MESON Chess Problem Database

Problem Display
PID: 213685 (1b3R2/2Q2B2/K1p1pB1p/1NR2Ppr/3pkPp1/8/3Pn2q/2n1Nb2 w - - 0 1)

Linderborg, Stig

Suomen Shakki, 1953

1b3R2/2Q2B2/K1p1pB1p/1NR2Ppr/3pkPp1/8/3Pn2q/2n1Nb2

#2

11 + 13

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf4
      • 2.Qxc6#
    • 1...Ba7
      • 2.Qe5#
    • 1...Sxf4
      • 2.Re5#
    • 1...gxf4
      • 2.Sd6#
      • 2.Re5#
      • 2.Qxc6#
    • 1...exf5
      • 2.Re8#
  • Tries
    • 1.Rxb8?
      • threat
        • 2.Qe5#
      • 1...Qxf4
        • 2.Qxc6#
      • 1...e5
        • 2.Qxe5#
      • 1...Sd3!
  • Keys
    • 1.Sd6+!
      • 1...Kxf4
        • 2.Be5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • Q(d);SBLOCK,XP(C)::QAB(I),XP(j)
    • B(m);N_GUARD::QAR1(I)
    • S(c);P_PINS(D),SBLOCK,XP(C)::R1(E)
    • P(k);OGATEB,XP(F)::R(K)
  • Tries
    • Try
      • R(K);XB(m)
      • Threat
        • QAR1(I)
      • Vars
        • Q(d);SBLOCK,XP(C)::QAB(I),XP(j)
        • P(k);::QAR1(I),XP(k)
      • Refutation
        • S(a);
  • Actual
    • S(D);CHECK
    • Vars
      • K(f);P-FLIGHT,XP(C)::B(H)
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