MESON Chess Problem Database

Problem Display
PID: 246049 (8/8/3R2K1/4N3/4k3/6Q1/3b4/3r4 w - - 0 1)

Svitek, Miroslav

Problemist Ukraini, 2017

8/8/3R2K1/4N3/4k3/6Q1/3b4/3r4

#2

4 + 3

5454 Near Snap 2021
15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sg4?
      • threat
        • 2.Sf2#
        • 2.Sf6#
      • 1...Be1
        • 2.Sf6#
        • 2.Qe3#
      • 1...Bc3
        • 2.Sf2#
        • 2.Qe3#
      • 1...Be3
        • 2.Sf6#
        • 2.Qxe3#
      • 1...Bf4
        • 2.Qg2#
      • 1...Bg5
        • 2.Sf2#
      • 1...Rf1!
    • 1.Sd7?
      • threat
        • 2.Sc5#
        • 2.Sf6#
      • 1...Rc1
        • 2.Sf6#
      • 1...Rf1
        • 2.Sc5#
      • 1...Bc3
        • 2.Sc5#
      • 1...Be3
        • 2.Sf6#
      • 1...Bb4
        • 2.Sf6#
      • 1...Bg5
        • 2.Sc5#
      • 1...Bf4!
    • 1.Qd3+?
      • 1...Kxe5
        • 2.Qd4#
      • 1...Kf4!
    • 1.Qg4+?
      • 1...Ke3
        • 2.Qf3#
      • 1...Kxe5
        • 2.Qd4#
      • 1...Bf4!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Sf2#
        • 2.Sc5#
      • 1...Rc1
        • 2.Sf2#
      • 1...Rf1
        • 2.Sc5#
      • 1...Be1
        • 2.Sc5#
        • 2.Qf4#
      • 1...Be3
        • 2.Qg2#
      • 1...Bb4
        • 2.Sf2#
        • 2.Qf4#
      • 1...Bf4
        • 2.Qxf4#

Anticipated by 244502(2007)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • B(b);SBLOCK::QAB(A)
        • B(b);::S(B)
      • Refutation
        • R(a);
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);::S(B)
        • B(b);::S(B)
      • Refutation
        • B(b);
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);P-FLIGHT,XS(B)::QAB1(A)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(A)
        • K(c);OGATE,P-FLIGHT,XS(B)::QAB1(A)
      • Refutation
        • B(b);P_SPINB(b)
  • Actual
    • S(B);
    • Threat
      • DUALS(2)
    • Vars
      • R(a);::S(B)
      • B(b);SBLOCK::QAB(A)
      • B(b);N_GUARD::QAR1(A),XB(b)
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