MESON Chess Problem Database

Problem Display
PID: 245528 (8/4Q3/K1k5/2N5/2Pr4/8/B7/8 w - - 0 1)

Shumarin, Vladimir Pavlovich

Kudesnik, 2005

8/4Q3/K1k5/2N5/2Pr4/8/B7/8

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.cxd5#
  • Tries
    • 1.Se4?
      • threat
        • 2.Qb7#
      • 1...Rd7
        • 2.Qc5#
      • 1...Rxe4!
    • 1.Se6?
      • threat
        • 2.Sxd4#
        • 2.Qc7#
      • 1...Rd1
        • 2.Qc7#
      • 1...Rd2
        • 2.Qc7#
      • 1...Rd3
        • 2.Qc7#
      • 1...Re4
        • 2.Sd8#
        • 2.Qc7#
      • 1...Rf4
        • 2.Sd8#
        • 2.Qc7#
      • 1...Rg4
        • 2.Sd8#
        • 2.Qc7#
      • 1...Rh4
        • 2.Sd8#
        • 2.Qc7#
      • 1...Rd5
        • 2.Qc7#
        • 2.cxd5#
      • 1...Rd6
        • 2.Qb7#
        • 2.Qc7#
      • 1...Rd7
        • 2.Qc5#
      • 1...Rd8
        • 2.Sxd8#
        • 2.Qc7#
      • 1...Rxc4!
    • 1.Qe6+?
      • 1...Kxc5
        • 2.Qb6#
      • 1...Rd6
        • 2.Qc8#
      • 1...Kc7!
    • 1.Qb7+?
      • 1...Kxc5
        • 2.Qb6#
      • 1...Kd6!
  • Keys
    • 1.Sb7!
      • threat
        • 2.Sa5#
      • 1...Rxc4
        • 2.Qd6#
      • 1...Rd7
        • 2.Qc5#
      • 1...Rd5
        • 2.cxd5#
      • 1...Rd6
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(a);OGATE::P(B),XR(a)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAB1(E)
      • Vars
        • R(a);SBLOCK::QAR1(E)
      • Refutation
        • R(a);XS(C)
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);::QAR1(E)
        • R(a);SBLOCK::QAR1(E)
      • Refutation
        • R(a);XP(B)
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT,XS(C)::QAB1(E)
        • R(a);P_SPINR(a),SBLOCK::QAR2(E)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);P-FLIGHT,XS(C)::QAB1(E)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • R(a);N_GUARD,XP(B)::QAR1(E)
      • R(a);SBLOCK::QAR1(E)
      • R(a);OGATE::P(B),XR(a)
      • R(a);N_GUARD::QAR1(E),XR(a)
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