MESON Chess Problem Database

Problem Display
PID: 47866 (5n2/8/n7/r2p4/4Pk2/3r1NNK/3P1R2/2Q5 w - - 0 1)

Vladimirov, Viacheslav Semenovich

Uralski Problemist, 2003

5n2/8/n7/r2p4/4Pk2/3r1NNK/3P1R2/2Q5

#2

7 + 6

5454 Near Snap 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd2
      • 2.Qxd2#
    • 1...Rda3
      • 2.d3#
    • 1...Rb3
      • 2.d3#
    • 1...Rc3
      • 2.dxc3#
    • 1...Re3
      • 2.dxe3#
    • 1...Rxf3
      • 2.d4#
    • 1...Rd4
      • 2.d3#
    • 1...Sb4
      • 2.Qc7#
    • 1...Sc7
      • 2.Qxc7#
    • 1...Sb8
      • 2.Qc7#
  • Keys
    • 1.Qc6!
      • threat
        • 2.Qd6#
        • 2.Qf6#
        • 2.Qh6#
      • 1...Rxd2
        • 2.Qh6#
      • 1...Rxf3
        • 2.Qf6#
      • 1...dxe4
        • 2.Qxe4#
      • 1...Se6
        • 2.Qd6#
      • 1...Sg6
        • 2.Qf6#
      • 1...Sd7
        • 2.Qh6#
      • 1...Sh7
        • 2.Qd6#
      • 1...d4
        • 2.Se2#

Anticipated by 86163(1976)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 6
    • REMOVED MATES = 8
  • Sets
    • R(a);OGATE,P_SPINR(a),XP(B)::QAB(A),XR(a)
    • R(a);OGATE::QAB(A)+P(B)
    • R(a);OGATE::QAB(A)+P(B),XR(a)
    • R(a);OGATE::P(B),XR(a)
    • R(a);OGATE,P_PINS(E),P_SPINR(a),XS(D)::QAB(A)+P(B)
    • S(e);N_GUARD::QAB(A)
    • S(e);N_GUARD::QAB(A),XS(e)
  • Actual
    • Q(A);
    • Threat
      • DUALS(3)
    • Vars
      • R(a);XP(B)::QAB(A)
      • R(a);P_PINS(E),P_SPINR(a),XS(D)::QAR2(A)
      • P(d);OGATE,XP(G)::QAR1(A),XP(d)
      • S(f);::QAB(A)
      • S(f);::QAR2(A)
      • P(d);::S(E)
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