MESON Chess Problem Database

Problem Display
PID: 264146 (5R2/8/p2QPK2/r1p3p1/2PNR3/q2p1B2/1p3k1B/1b3r1n w - - 0 1)

Gavrilov, Constantin Grigorievich

Tijdschrift vd KNSB, 1940

5R2/8/p2QPK2/r1p3p1/2PNR3/q2p1B2/1p3k1B/1b3r1n

#2

9 + 11

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sg3
      • 2.Qxg3#
    • 1...d2
      • 2.Re2#
  • Tries
    • 1.Kg6?
      • threat
        • 2.Bxh1#
      • 1...cxd4
        • 2.Qxd4#
      • 1...Sg3
        • 2.Qxg3#
      • 1...d2!
    • 1.Ke7?
      • threat
        • 2.Bxh1#
      • 1...Sg3
        • 2.Qxg3#
      • 1...d2
        • 2.Re2#
      • 1...cxd4!
    • 1.Bxh1?
      • threat
        • 2.Ke5#
        • 2.Kxg5#
        • 2.Kg6#
        • 2.Ke7#
        • 2.Kg7#
        • 2.Qg3#
      • 1...cxd4
        • 2.Qg3#
        • 2.Qxd4#
      • 1...Rc1
        • 2.Ke5#
        • 2.Kxg5#
        • 2.Kg6#
        • 2.Ke7#
        • 2.Kg7#
      • 1...Rd1
        • 2.Ke5#
        • 2.Kxg5#
        • 2.Kg6#
        • 2.Ke7#
        • 2.Kg7#
      • 1...Re1
        • 2.Ke5#
        • 2.Kxg5#
        • 2.Kg6#
        • 2.Ke7#
        • 2.Kg7#
      • 1...Rg1
        • 2.Ke5#
        • 2.Kg6#
        • 2.Ke7#
        • 2.Kg7#
      • 1...d2
        • 2.Re2#
      • 1...g4
        • 2.Ke5#
        • 2.Kg5#
        • 2.Kg6#
        • 2.Ke7#
        • 2.Kg7#
        • 2.Qg3#
        • 2.Qf4#
      • 1...Rxh1!
  • Keys
    • 1.Kg7!
      • threat
        • 2.Bxh1#
      • 1...cxd4
        • 2.Qxd4#
      • 1...Sg3
        • 2.Qxg3#
      • 1...d2
        • 2.Re2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD::QAB1(F),XS(c)
    • P(g);N_GUARD::R1(E)
  • Tries
    • Try
      • K(H);P-FLIGHT
      • Threat
        • R(I)+B(B),XS(c)
      • Vars
        • P(i);OGATE,XS(D)::QAB(F),XP(i)
        • S(c);N_GUARD::QAB1(F),XS(c)
      • Refutation
        • P(g);P_PINR(E)
    • Try
      • K(H);S_FLIGHT
      • Threat
        • R(I)+B(B),XS(c)
      • Vars
        • S(c);N_GUARD::QAB1(F),XS(c)
        • P(g);N_GUARD::R1(E)
      • Refutation
        • P(i);P_PINQ(F),XS(D)
    • Try
      • B(B);XS(c)
      • Threat
        • DUALS(6)
      • Vars
        • P(g);N_GUARD::R1(E)
      • Refutation
        • R(b);XB(B)
  • Actual
    • K(H);S_FLIGHT
    • Threat
      • R(I)+B(B),XS(c)
    • Vars
      • P(i);OGATE,XS(D)::QAB(F),XP(i)
      • S(c);N_GUARD::QAB1(F),XS(c)
      • P(g);N_GUARD::R1(E)
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