MESON Chess Problem Database

Problem Display
PID: 174509 (8/5b2/8/2p2R2/1p1k4/3P1r2/BK2PP2/1Q6 w - - 0 1)

Volchek, Viktor Fedorovich

3rd Comm., Narodnaya tribuna, 1997

8/5b2/8/2p2R2/1p1k4/3P1r2/BK2PP2/1Q6

#2

7 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd3
      • 2.Qxd3#
    • 1...Rf4
      • 2.e3#
    • 1...Bd5
      • 2.Rxd5#
    • 1...Bh5
      • 2.Rd5#
    • 1...Bg6
      • 2.Rd5#
    • 1...Be8
      • 2.Rd5#
  • Tries
    • 1.Qc1?
      • threat
        • 2.Qxc5#
      • 1...Rxd3
        • 2.Qf4#
      • 1...Rxf5
        • 2.Qe3#
      • 1...Bc4
        • 2.Qxc4#
      • 1...Bd5
        • 2.Rxd5#
      • 1...c4!
    • 1.Qh1?
      • threat
        • 2.Qh8#
      • 1...Rxf2
        • 2.Qe4#
      • 1...Rxd3
        • 2.Qh4#
      • 1...Rxf5
        • 2.Qe4#
      • 1...Rg3
        • 2.Qe4#
      • 1...Rh3
        • 2.Qe4#
      • 1...Bh5
        • 2.Rd5#
      • 1...Re3!
  • Keys
    • 1.Qg1!
      • threat
        • 2.Qg7#
      • 1...Rxf2
        • 2.Qxf2#
      • 1...Rxd3
        • 2.Qg4#
      • 1...Rxf5
        • 2.f4#
      • 1...Re3
        • 2.fxe3#
      • 1...Rg3
        • 2.fxg3#
      • 1...Bg6
        • 2.Rd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • R(a);OGATE,XP(F)::QAR1(A),XR(a)
    • R(a);N_GUARD::P(D)
    • B(e);N_GUARD::R1(G),XB(e)
    • B(e);N_GUARD::R1(G)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A),XP(d)
      • Vars
        • R(a);N_GUARD,XP(F)::QAR2(A)
        • R(a);N_GUARD,XR(G)::QAB1(A)
        • B(e);N_GUARD::QAR1(A),XB(e)
        • B(e);N_GUARD::R1(G),XB(e)
      • Refutation
        • P(d);
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Vars
        • R(a);OGATE,P_PINP(D),XP(E)::QAR1(A)
        • R(a);N_GUARD,XP(F)::QAR(A)
        • R(a);OGATE,XR(G)::QAR1(A)
        • R(a);OGATE::QAR1(A)
        • B(e);N_GUARD::R1(G)
      • Refutation
        • R(a);
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • R(a);OGATE,P_PINP(D),P_SPINR(a),XP(E)::QAB(A),XR(a)
      • R(a);N_GUARD,XP(F)::QAR(A)
      • R(a);OGATE,XR(G)::QAB(A)+P(E)
      • R(a);OGATE::P(E),XR(a)
      • R(a);OGATE::QAB(A)+P(E),XR(a)
      • B(e);N_GUARD::R1(G)
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