MESON Chess Problem Database

Problem Display
PID: 177889 (8/1Kn5/p3pN2/7b/QPkpp2R/4p3/4R2r/B1N5 w - - 0 1)

Pavlov, Mikhail Aleksandrovich

Sahs (Latvia), 1983

8/1Kn5/p3pN2/7b/QPkpp2R/4p3/4R2r/B1N5

#2

8 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.Rc2#
    • 1...Rh3
      • 2.Rc2#
    • 1...Rxh4
      • 2.Rc2#
    • 1...Sb5
      • 2.Qb3#
    • 1...d3
      • 2.Rxe4#
  • Tries
    • 1.Kc6?
      • threat
        • 2.Qb3#
        • 2.b5#
      • 1...Sb5
        • 2.Qb3#
      • 1...Sd5
        • 2.Qb3#
      • 1...Be8+!
    • 1.Sd7?
      • threat
        • 2.Sb6#
      • 1...Kd5
        • 2.Qc6#
      • 1...Sd5
        • 2.Se5#
      • 1...Sa8!
    • 1.Bc3?
      • threat
        • 2.Qc6#
      • 1...Kxc3
        • 2.Qb3#
      • 1...dxc3
        • 2.Rxe4#
      • 1...Sb5
        • 2.Qb3#
      • 1...Be8!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Se5#
      • 1...Kxd3
        • 2.Qc2#
      • 1...exd3
        • 2.Rxd4#
      • 1...e5
        • 2.Sxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(a);N_GUARD::R(C)
    • R(a);N_GUARD,XR(F)::R(C)
    • S(i);SBLOCK::QAB1(D)
    • P(d);OGATEB,P_SPINP(e)::R(F),XP(e)
  • Tries
    • Try
      • K(H);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • S(i);::QAB1(D)
      • Refutation
        • B(f);CHECK
    • Try
      • S(G);
      • Threat
        • S(G)
      • Vars
        • K(c);S_FLIGHT::QAB1(D)
        • S(i);SBLOCK::S(G)
      • Refutation
        • S(i);
    • Try
      • B(A);
      • Threat
        • QAR2(D)
      • Vars
        • K(c);P-FLIGHT,XB(A)::QAR1(D)
        • P(d);OGATEB,P_SPINP(e),SBLOCK,XB(A)::R(F),XP(e)
        • S(i);SBLOCK::QAB1(D)
      • Refutation
        • B(f);
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • K(c);S_FLIGHT,XS(B)::QAB1(D)
      • P(e);OGATE,P_SPINP(d),XS(B)::R1(F),XP(d)
      • P(h);::S(B),XP(h)
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