MESON Chess Problem Database

Problem Display
PID: 174504 (8/7Q/bR2ppp1/1P1n4/2BkNP2/6N1/5K2/2R5 w - - 0 1)

Volchek, Viktor Fedorovich

Shakhmatnaya Poeziya, 2001

8/7Q/bR2ppp1/1P1n4/2BkNP2/6N1/5K2/2R5

#2

9 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...g5
      • 2.Se2#
  • Tries
    • 1.Rc6?
      • threat
        • 2.Rd1#
      • 1...Sc3
        • 2.Qa7#
      • 1...Se3
        • 2.Qa7#
      • 1...Sb4
        • 2.Qa7#
      • 1...Sxf4!
    • 1.Rxe6?
      • threat
        • 2.Se2#
      • 1...Sxf4
        • 2.Qa7#
      • 1...Sc3!
    • 1.Qh5?
      • threat
        • 2.Qd1#
      • 1...Sxf4
        • 2.Qc5#
      • 1...Sc3
        • 2.Qc5#
      • 1...Se3
        • 2.Qc5#
      • 1...Sb4
        • 2.Qc5#
      • 1...gxh5!
    • 1.Qc7?
      • threat
        • 2.Rd1#
        • 2.Qc5#
      • 1...Sxf4
        • 2.Qc5#
      • 1...Sc3
        • 2.Qc5#
      • 1...Se3
        • 2.Qc5#
      • 1...Sb4
        • 2.Qc5#
      • 1...Sxc7!
  • Keys
    • 1.Qa7!
      • threat
        • 2.Rd6#
      • 1...Sxf4
        • 2.Rxe6#
      • 1...Sxb6
        • 2.Qxb6#
      • 1...Sc3
        • 2.Rc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(f);::S(C)
  • Tries
    • Try
      • R(H);
      • Threat
        • R(A)
      • Vars
        • S(b);N_GUARD::QAB(I)
      • Refutation
        • S(b);XP(F)
    • Try
      • R(H);XP(d)
      • Threat
        • S(C)
      • Vars
        • S(b);N_GUARD,XP(F)::QAB(I)
      • Refutation
        • S(b);
    • Try
      • Q(I);
      • Threat
        • QAR(I)
      • Vars
        • S(b);OGATE,XP(F)::QAB1(I)
        • S(b);OGATE::QAB1(I)
      • Refutation
        • P(f);XQ(I)
    • Try
      • Q(I);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);XP(F)::QAB1(I)
        • S(b);::QAB1(I)
      • Refutation
        • S(b);XQ(I)
  • Actual
    • Q(I);
    • Threat
      • QAB(I)+R(H)
    • Vars
      • S(b);N_GUARD,XP(F)::QAB(I)+R(H),XP(d)
      • S(b);OGATE,P_SPINS(b),XR(H)::QAB(I),XS(b)
      • S(b);N_GUARD::QAB(I)+R(H)
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