MESON Chess Problem Database

Problem Display
PID: 241342 (8/2Q5/4p3/1rPPK3/pk6/pp2R3/b7/R3NB2 w - - 0 1)

Gavrilov, Constantin Grigorievich

Revista Romana de Sah, 1936

8/2Q5/4p3/1rPPK3/pk6/pp2R3/b7/R3NB2

#2

8 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rb6
      • 2.Qxb6#
    • 1...b2
      • 2.Sc2#
  • Tries
    • 1.Sd3+?
      • 1...Kc4
        • 2.Rc1#
      • 1...Kc3!
    • 1.Rd1?
      • threat
        • 2.Rd4#
      • 1...Rb6
        • 2.Qxb6#
      • 1...b2
        • 2.Sc2#
      • 1...Rxc5!
    • 1.Qb7?
      • threat
        • 2.Qxb5#
      • 1...Ka5
        • 2.Qxb5#
      • 1...Kxc5
        • 2.Qxb5#
      • 1...Rb6
        • 2.Qxb6#
      • 1...Rxb7!
  • Keys
    • 1.Rc1!
      • threat
        • 2.Sd3#
        • 2.Rc4#
        • 2.Re4#
      • 1...Rxc5
        • 2.Qxc5#
      • 1...exd5
        • 2.Sd3#
      • 1...Rb6
        • 2.Qxb6#
      • 1...Ra5
        • 2.Re4#
      • 1...Rb7
        • 2.Re4#
      • 1...Rb8
        • 2.Re4#
      • 1...Bb1
        • 2.Rc4#
      • 1...b2
        • 2.Sc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • R(f);OGATEB::QAR2(H),XR(f)
    • P(c);N_GUARD::S(B)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(e);P-FLIGHT::R(A)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • R(A);
      • Threat
        • R(A)
      • Vars
        • R(f);OGATEB::QAR2(H),XR(f)
        • P(c);N_GUARD::S(B)
      • Refutation
        • R(f);P_PINP(F),XP(E)
    • Try
      • Q(H);P_PINR(f)
      • Threat
        • QAR1(H),XR(f)
      • Vars
        • K(e);N_SPINR(f),S_FLIGHT::QAR1(H),XR(f)
        • K(e);N_SPINR(f),S_FLIGHT,XP(E)::QAR1(H),XR(f)
        • R(f);OGATEB::QAR2(H),XR(f)
      • Refutation
        • R(f);N_SPINR(f),XQ(H)
  • Actual
    • R(A);
    • Threat
      • DUALS(3)
    • Vars
      • R(f);OGATE,P_PINP(F),XP(E)::QAB1(H),XR(f)
      • P(g);XP(F)::S(B)
      • R(f);OGATEB::QAR2(H),XR(f)
      • R(f);::R(D)
      • B(a);::R1(A)
      • P(c);N_GUARD::S(B)
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