MESON Chess Problem Database

Problem Display
PID: 242246 (4Kn2/6p1/4kN2/2p2Rp1/4prr1/b2Qn3/8/B4R2 w - - 0 1)

Kisis, Imants J

Shakhmaty (Riga), 1977

4Kn2/6p1/4kN2/2p2Rp1/4prr1/b2Qn3/8/B4R2

#2

6 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf5
      • 2.Qxe4#
    • 1...Rxf5
      • 2.Qa6#
    • 1...Sd1
      • 2.Qd5#
    • 1...Sxf1
      • 2.Qd5#
    • 1...Sc2
      • 2.Qd5#
    • 1...Sg2
      • 2.Qd5#
    • 1...Sc4
      • 2.Qd5#
    • 1...Sd5
      • 2.Qxd5#
    • 1...Sxf5
      • 2.Qd5#
    • 1...Sg6
      • 2.Qd7#
    • 1...Sd7
      • 2.Qxd7#
    • 1...Sh7
      • 2.Qd7#
  • Keys
    • 1.Sxe4!
      • threat
        • 2.Re5#
      • 1...Kxf5
        • 2.Sxc5#
      • 1...Rxe4
        • 2.Qa6#
      • 1...Rxf5
        • 2.Qd6#
      • 1...Sxf5
        • 2.Qc4#
      • 1...Bb2
        • 2.Sxc5#
      • 1...Sc4
        • 2.Qd5#
      • 1...Sg6
        • 2.Qd7#
      • 1...Sd7
        • 2.Qxd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • K(h);P_SPINP(c),P_SPINR(d),S_FLIGHT,XR(D)::QAB1(C),XP(c)
    • R(d);XR(D)::QAR(C)
    • S(b);N_GUARD::QAB1(C)
    • S(b);N_GUARD,XR(B)::QAB1(C)
    • S(b);N_GUARD::QAB1(C),XS(b)
    • S(b);N_GUARD,XR(D)::QAB1(C)
    • S(j);N_GUARD::QAB1(C)
    • S(j);N_GUARD::QAB1(C),XS(j)
  • Actual
    • S(E);XP(c)
    • Threat
      • R1(D)
    • Vars
      • K(h);P_SPINR(d),S_FLIGHT,XR(D)::QAB(C)+S(E),XP(f)
      • R(d);XS(E)::QAR(C)
      • R(d);XR(D)::QAR1(C)
      • S(b);N_GUARD,SBLOCK,XR(D)::QAB(C)
      • B(a);N_GUARD::S(E),XP(f)
      • S(b);N_GUARD::QAB1(C)
      • S(j);N_GUARD::QAB1(C)
      • S(j);N_GUARD::QAB1(C),XS(j)
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