MESON Chess Problem Database

Problem Display
PID: 215300 (3RK2b/1p3P2/3RN1Q1/1p1Bk1N1/r6r/1p1nB3/6p1/1b3q2 w - - 0 1)

Pavlov, Yury A

Zadachi i Etyudi, 1999

3RK2b/1p3P2/3RN1Q1/1p1Bk1N1/r6r/1p1nB3/6p1/1b3q2

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qc1
      • 2.Sf3#
    • 1...Qe1
      • 2.Sf3#
    • 1...Qg1
      • 2.Sf3#
    • 1...Qh1
      • 2.Sf3#
    • 1...Qf3
      • 2.Sxf3#
    • 1...Qxf7+
      • 2.Sxf7#
    • 1...Sf2
      • 2.Sf3#
  • Tries
    • 1.Sg7?
      • threat
        • 2.Re6#
        • 2.Qe6#
      • 1...Qxf7+
        • 2.Sxf7#
      • 1...Qf5
        • 2.Qxf5#
      • 1...Qf6
        • 2.Qxf6#
      • 1...Ra6
        • 2.Qe6#
      • 1...Rh6
        • 2.Re6#
      • 1...Sf4
        • 2.Qf6#
      • 1...Sc5!
    • 1.Bc4?
      • threat
        • 2.Rd5#
      • 1...Qxf7+
        • 2.Sxf7#
      • 1...Qf3
        • 2.Sxf3#
      • 1...Rd4
        • 2.Bxd4#
      • 1...Sf4
        • 2.Bd4#
      • 1...Sb4!
  • Keys
    • 1.Be4!
      • threat
        • 2.Rd5#
      • 1...Qxf7+
        • 2.Sxf7#
      • 1...Rd4
        • 2.Bxd4#
      • 1...Sb4
        • 2.Bd4#
      • 1...Sf4
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • Q(b);N_GUARD::S(C)
    • Q(b);N_GUARD::S(C),XQ(b)
    • Q(b);CHECK,XP(G)::S(C),XQ(b)
    • S(e);S_CUTQ(b)::S(C)
  • Tries
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);CHECK,XP(G)::S(C),XQ(b)
        • Q(b);N_GUARD::QAR1(F),XQ(b)
        • Q(b);N_GUARD::QAB1(F),XQ(b)
        • R(f);::QAR1(F)
        • R(g);::R1(D)
        • S(e);S_CUTQ(b)::QAB1(F)
      • Refutation
        • S(e);
    • Try
      • B(B);
      • Threat
        • R1(D)
      • Vars
        • Q(b);CHECK,XP(G)::S(C),XQ(b)
        • Q(b);N_GUARD::S(C),XQ(b)
        • R(g);N_GUARD::B(A),XR(g)
        • S(e);S_CUTR(g)::B(A)
      • Refutation
        • S(e);
  • Actual
    • B(B);
    • Threat
      • R1(D)
    • Vars
      • Q(b);CHECK,XP(G)::S(C),XQ(b)
      • R(f);N_GUARD::B(A),XR(f)
      • S(e);S_CUTR(f)::B(A)
      • S(e);S_CUTQ(b)::QAR1(F)
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