MESON Chess Problem Database

Problem Display
PID: 210086 (3N4/3br3/8/1P1knR2/8/Q2P2p1/KN3n2/b3R1B1 w - - 0 1)

Banny, Dimitry Nikolaevich

Suomen Shakki, 1996

3N4/3br3/8/1P1knR2/8/Q2P2p1/KN3n2/b3R1B1

#2

9 + 7

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Qc5#
    • 1...Sh1
      • 2.Qc5#
    • 1...Sxd3
      • 2.Qxd3#
    • 1...Sh3
      • 2.Qc5#
    • 1...Se4
      • 2.dxe4#
    • 1...Sg4
      • 2.Qc5#
  • Tries
    • 1.Sa4?
      • threat
        • 2.Qc5#
      • 1...Kd4
        • 2.Qd6#
      • 1...Sxd3
        • 2.Sb6#
      • 1...Se4
        • 2.Sb6#
      • 1...Bd4!
    • 1.Rc1?
      • threat
        • 2.Qc5#
      • 1...Kd4
        • 2.Qc5#
      • 1...Sxd3
        • 2.Qxd3#
      • 1...Se4!
    • 1.Rexe5+?
      • 1...Kd4
        • 2.Qb4#
        • 2.Qc5#
      • 1...Rxe5!
    • 1.Rfxe5+?
      • 1...Kd4
        • 2.R1e4#
        • 2.Qb4#
        • 2.Qc5#
      • 1...Rxe5!
  • Keys
    • 1.Sb7!
      • threat
        • 2.Qd6#
      • 1...Kd4
        • 2.Qc5#
      • 1...Ke6
        • 2.Rexe5#
      • 1...Re6
        • 2.Qc5#
      • 1...Se4
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • S(b);::QAR1(E)
    • S(b);OGATE,XP(F)::QAR2(E),XS(b)
    • S(b);OGATE::P(F),XS(b)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR1(E)
      • Vars
        • K(d);N_SPINS(e),P-FLIGHT,P_SPINS(b)::QAR2(E)
        • S(b);XP(F)::S(D)
        • S(b);::S(D)
      • Refutation
        • B(a);
    • Try
      • R(A);
      • Threat
        • QAR1(E)
      • Vars
        • K(d);N_SPINS(e),P-FLIGHT,P_SPINS(b)::QAB1(E)
        • S(b);OGATE,XP(F)::QAR2(E),XS(b)
      • Refutation
        • S(b);
    • Try
      • R(A);CHECK,XS(e)
      • Refutation
        • R(g);P_SPINR(g),XR(A)
    • Try
      • R(H);CHECK,XS(e)
      • Refutation
        • R(g);XR(H)
  • Actual
    • S(I);
    • Threat
      • QAR1(E)
    • Vars
      • K(d);N_SPINS(e),P-FLIGHT,P_SPINS(b)::QAB1(E)
      • K(d);S_FLIGHT::R1(A),XS(e)
      • R(g);SBLOCK::QAR1(E)
      • S(b);::QAB(E)
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