MESON Chess Problem Database

Problem Display
PID: 267002 (7Q/1p1K4/8/2pkp3/r7/1R1P1P2/1Nn1n3/3N4 w - - 0 1)

Chernikh, Vassily

Zadachi i Etyudi, 2012

7Q/1p1K4/8/2pkp3/r7/1R1P1P2/1Nn1n3/3N4

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Qg8#
    • 1...Scd4
      • 2.Se3#
    • 1...Sed4
      • 2.Sc3#
  • Tries
    • 1.Sc4?
      • threat
        • 2.Qxe5#
      • 1...Kd4
        • 2.Qxe5#
      • 1...e4
        • 2.Sb6#
        • 2.Qe5#
        • 2.fxe4#
      • 1...Rxc4!
    • 1.Qf6?
      • threat
        • 2.Qd6#
      • 1...Kd4
        • 2.Qd6#
      • 1...Ra6!
    • 1.Qh6?
      • threat
        • 2.Qd6#
      • 1...Kd4
        • 2.Qd6#
      • 1...Ra6!
    • 1.Qb8?
      • threat
        • 2.Qd6#
      • 1...Kd4
        • 2.Qd6#
      • 1...Ra6!
    • 1.Qf8?
      • threat
        • 2.Qd6#
      • 1...Kd4
        • 2.Qd6#
      • 1...Ra6!
  • Keys
    • 1.d4!
      • threat
        • 2.Qxe5#
      • 1...Kxd4
        • 2.Rd3#
      • 1...Rxd4
        • 2.Qg8#
      • 1...Scxd4
        • 2.Se3#
      • 1...Sexd4
        • 2.Sc3#
      • 1...cxd4
        • 2.Rb5#
      • 1...exd4
        • 2.Qh5#
      • 1...e4
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(c);SBLOCK::QAB(G)
    • S(a);N_GUARD,SBLOCK::S(A)
    • S(b);N_GUARD,SBLOCK::S(A)
  • Tries
    • Try
      • S(B);
      • Threat
        • QAR1(G),XP(f)
      • Vars
        • K(e);P-FLIGHT,P_SPINP(f)::QAB1(G),XP(f)
      • Refutation
        • R(c);XS(B)
    • Try
      • Q(G);
      • Threat
        • QAR1(G)
      • Vars
        • K(e);P-FLIGHT,P_SPINP(f)::QAR2(G)
      • Refutation
        • R(c);
    • Try
      • Q(G);
      • Threat
        • QAR1(G)
      • Vars
        • K(e);P-FLIGHT::QAR2(G)
      • Refutation
        • R(c);
    • Try
      • Q(G);
      • Threat
        • QAR1(G)
      • Vars
        • K(e);P-FLIGHT::QAR2(G)
      • Refutation
        • R(c);
    • Try
      • Q(G);
      • Threat
        • QAR1(G)
      • Vars
        • K(e);P-FLIGHT::QAR2(G)
      • Refutation
        • R(c);
  • Actual
    • P(D);
    • Threat
      • QAR1(G),XP(f)
    • Vars
      • K(e);OGATEB,P-FLIGHT,P_SPINP(f),XP(D)::R1(C)
      • R(c);SBLOCK,XP(D)::QAB(G)
      • S(a);N_GUARD,SBLOCK,XP(D)::S(A)
      • S(b);N_GUARD,SBLOCK,XP(D)::S(A)
      • P(d);OGATEB,SBLOCK,XP(D)::R(C)
      • P(f);OGATEB,SBLOCK,XP(D)::QAR(G)
      • P(f);::QAR1(G)
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