MESON Chess Problem Database

Problem Display
PID: 203390 (6b1/2pp4/1p1p4/n2k4/PP1NR2p/5Qpq/K1P5/8 w - - 0 1)

Neunivako, Pavel Efimovich

Shakhmaty, 1924

6b1/2pp4/1p1p4/n2k4/PP1NR2p/5Qpq/K1P5/8

#2

7 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sf5?
      • threat
        • 2.Se7#
      • 1...Kc6+
        • 2.Rc4#
        • 2.Re6#
      • 1...Sc6
        • 2.Se3#
        • 2.c4#
      • 1...Qxf5!
    • 1.Rf4+?
      • 1...Kc4
        • 2.Se2#
        • 2.Sb3#
        • 2.Sb5#
        • 2.Sf5#
        • 2.Sc6#
        • 2.Se6#
      • 1...Ke5+!
    • 1.Re6+?
      • 1...Kxd4
        • 2.Qd3#
      • 1...Kc4!
    • 1.Qf5+?
      • 1...Kc4
        • 2.Se2#
        • 2.Sb5#
      • 1...Qxf5!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Se7#
      • 1...Kxc6+
        • 2.Rc4#
        • 2.Re6#
      • 1...Sxc6
        • 2.c4#
      • 1...dxc6
        • 2.Qd3#
      • 1...Qe6
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);
      • Threat
        • S(F)
      • Refutation
        • Q(b);XS(F)
    • Try
      • R(G);CHECK
      • Refutation
        • K(e);CHECK,P-FLIGHT
    • Try
      • R(G);CHECK
      • Vars
        • K(e);OGATEB,P-FLIGHT,P_PINR(G),XS(F)::QAR1(C)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Refutation
        • Q(b);XQ(C)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • S(d);N_GUARD,SBLOCK,XS(F)::P(B)
      • P(i);SBLOCK,XS(F)::QAR2(C)
      • Q(b);SBLOCK::QAB(C)+R(G),DCHECK
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