MESON Chess Problem Database

Problem Display
PID: 266046 (8/2p4P/5p2/R4p2/3kPr2/1Pn5/3P1N2/K1R3Q1 w - - 0 1)

Shpakovsky, Aleksandr Nikolaevich

64 Shakhmatnoe obozrenie, 2022

8/2p4P/5p2/R4p2/3kPr2/1Pn5/3P1N2/K1R3Q1

#2

9 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Sb1
      • 2.Rc4#
      • 2.Rd5#
    • 1...Sd1
      • 2.Rc4#
      • 2.Rd5#
    • 1...Sa2
      • 2.Rc4#
      • 2.Rd5#
    • 1...Se2
      • 2.Rc4#
      • 2.Rd5#
    • 1...Sa4
      • 2.Rc4#
      • 2.Rd5#
    • 1...Sxe4
      • 2.Rc4#
    • 1...Sd5
      • 2.Rxd5#
  • Tries
    • 1.Sd1+?
      • 1...Kd3
        • 2.Qe3#
      • 1...Kxe4
        • 2.Qe3#
      • 1...Rf2!
    • 1.Sh1+?
      • 1...Kd3
        • 2.Qe3#
      • 1...Kxe4
        • 2.Qe3#
      • 1...Rf2!
    • 1.Sd3+?
      • 1...Kxd3
        • 2.Qe3#
      • 1...Kxe4
        • 2.Qe3#
      • 1...Rf2!
    • 1.Sh3+?
      • 1...Kd3
        • 2.Qe3#
      • 1...Kxe4
        • 2.Qe3#
      • 1...Rf2!
    • 1.Sg4+?
      • 1...Kd3
        • 2.Qe3#
      • 1...Kxe4
        • 2.Qe3#
      • 1...Rf2!
    • 1.Qg8?
      • threat
        • 2.Qc4#
      • 1...Sb5
        • 2.Qd5#
      • 1...Sd5
        • 2.Rxd5#
        • 2.Qxd5#
      • 1...c5!
  • Keys
    • 1.Qg5!
      • threat
        • 2.Qxf6#
      • 1...Rxf2
        • 2.Qe3#
      • 1...Rxe4
        • 2.dxc3#
      • 1...Sxe4
        • 2.Rc4#
      • 1...fxe4
        • 2.Qc5#
      • 1...fxg5
        • 2.h8Q#
        • 2.h8B#
      • 1...Sd5
        • 2.Rxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(a);OGATE,XP(G)::R1(B)
    • S(a);N_GUARD::R1(H),XS(a)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(C)
        • K(b);P-FLIGHT,XP(G)::QAR1(C)
      • Refutation
        • R(c);P_SPINR(c)
    • Try
      • S(E);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(C)
        • K(b);P-FLIGHT,XP(G)::QAR1(C)
      • Refutation
        • R(c);P_SPINR(c)
    • Try
      • S(E);CHECK
      • Vars
        • K(b);P-FLIGHT,XS(E)::QAR1(C)
        • K(b);P-FLIGHT,XP(G)::QAR1(C)
      • Refutation
        • R(c);P_SPINR(c)
    • Try
      • S(E);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(C)
        • K(b);P-FLIGHT,XP(G)::QAR1(C)
      • Refutation
        • R(c);P_SPINR(c)
    • Try
      • S(E);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(C)
        • K(b);P-FLIGHT,XP(G)::QAR1(C)
      • Refutation
        • R(c);P_SPINR(c)
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • S(a);N_GUARD::QAR1(C)
      • Refutation
        • P(f);
  • Actual
    • Q(C);
    • Threat
      • QAB(C),XP(e)
    • Vars
      • R(c);OGATE,XS(E)::QAB1(C)
      • R(c);XP(G)::P(D),XS(a)
      • S(a);OGATE,XP(G)::R1(B)
      • P(d);OGATE,XP(G)::QAB1(C)
      • P(e);XQ(C)::P=Q
      • S(a);N_GUARD::R1(H),XS(a)
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