MESON Chess Problem Database

Problem Display
PID: 92650 (5b2/7b/8/1p2N3/4Q3/2k2rNp/1R1Rp2r/1KB1n2q w - - 0 1)

Gulyaev, Aleksandr Pavlovich (aka Grin, AP)

Tijdschrift vd NSB, 1927

5b2/7b/8/1p2N3/4Q3/2k2rNp/1R1Rp2r/1KB1n2q

#2

7 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rf5
      • 2.Qd4#
    • 1...Bxe4+
      • 2.Sxe4#
    • 1...Bg8
      • 2.Qd4#
    • 1...Sc2
      • 2.Rdxc2#
    • 1...Sg2
      • 2.Sxe2#
      • 2.Rdc2#
    • 1...Sd3
      • 2.Rdc2#
  • Tries
    • 1.Ka2?
      • threat
        • 2.Rb3#
        • 2.Qd4#
      • 1...Bxe4
        • 2.Sxe4#
        • 2.Rb3#
      • 1...Qg1
        • 2.Rb3#
      • 1...Rd3
        • 2.Rb3#
      • 1...Rf4
        • 2.Rb3#
      • 1...Bc5
        • 2.Rb3#
      • 1...Sc2
        • 2.Rbxc2#
        • 2.Rb3#
        • 2.Rdxc2#
      • 1...Sd3
        • 2.Rbc2#
        • 2.Rb3#
        • 2.Rdc2#
      • 1...Bg8+!
  • Keys
    • 1.Rd6!
      • threat
        • 2.Bd2#
      • 1...Bxe4+
        • 2.Sxe4#
      • 1...Rd3
        • 2.Qb4#
      • 1...Bh6
        • 2.Rc6#
      • 1...Sc2
        • 2.Qc6#
      • 1...Sg2
        • 2.Sxe2#
      • 1...Sd3
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(f);N_PINQ(F)::QAB1(F)
    • B(i);CHECK,XQ(F)::S(E),XB(i)
    • B(i);N_PINQ(F)::QAB1(F)
    • S(a);N_GUARD,N_PINQ(F),P_PINB(B)::R1(D),XS(a)
    • S(a);N_GUARD,N_PINQ(F),P_PINB(B)::R1(D)
  • Tries
    • Try
      • K(A);N_SPINQ(F),S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);::R1(C)
        • R(f);::R1(C)
        • B(j);::R1(C)
      • Refutation
        • B(i);CHECK
  • Actual
    • R(D);
    • Threat
      • B(B)
    • Vars
      • B(i);CHECK,XQ(F)::S(E),XB(i)
      • R(f);N_PINQ(F)::QAB1(F)
      • B(j);N_GUARD::R(D)
      • S(a);N_PINQ(F),P_PINB(B)::QAR(F)
      • S(a);P_PINB(B),S_CUTR(d)::S(E),XP(c)
      • S(a);N_PINQ(F),P_PINB(B)::QAB1(F)
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Developed and maintained by Brian Stephenson.
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