MESON Chess Problem Database

Problem Display
PID: 231318 (2b2N2/5p2/4r2p/1Q2PkPp/3R1B2/8/p6N/2n1K3 w - - 0 1)

Golubev, Giorgi P

64 Shakhmatnoe obozrenie, 1927

2b2N2/5p2/4r2p/1Q2PkPp/3R1B2/8/p6N/2n1K3

#2

8 + 8

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe5+
      • 2.Qxe5#
    • 1...Ra6
      • 2.e6#
    • 1...Rd6
      • 2.exd6#
    • 1...Rf6
      • 2.exf6#
      • 2.e6#
    • 1...Rg6
      • 2.e6#
    • 1...Re7
      • 2.e6#
    • 1...Re8
      • 2.e6#
    • 1...Se2
      • 2.Qd3#
    • 1...Sb3
      • 2.Qd3#
    • 1...Sd3+
      • 2.Qxd3#
  • Keys
    • 1.Qf1!
      • threat
        • 2.Qh3#
      • 1...Rxe5+
        • 2.Be3#
      • 1...Sd3+
        • 2.Qxd3#
      • 1...hxg5
        • 2.Bg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • R(e);CHECK,OGATE,P_SPINR(e),XP(F)::QAR1(E),XR(e)
    • R(e);N_PINP(F)::QAR(E)+P(F)
    • R(e);N_PINP(F)::QAR(E)+P(F),XR(e)
    • R(e);::QAR(E)+P(F)
    • S(a);N_GUARD,N_PINP(F)::QAB(E)
    • S(a);N_GUARD::QAB(E)
    • S(a);CHECK,N_GUARD::QAB(E),XS(a)
  • Actual
    • Q(E);
    • Threat
      • QAB(E)
    • Vars
      • R(e);CHECK,SBLOCK,XP(F)::QAR(E)+B(D)
      • S(a);CHECK,N_GUARD::QAB(E),XS(a)
      • P(f);SBLOCK,XP(G)::QAR(E)+B(D)
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Developed and maintained by Brian Stephenson.
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