MESON Chess Problem Database

Problem Display
PID: 9716 (2B1R3/6p1/4NPrb/3P2rp/1p2kN1P/5RB1/2P2P2/2K4Q w - - 0 1)

Gavrilov, Constantin Grigorievich

Tidskrift for Schack, 1908

2B1R3/6p1/4NPrb/3P2rp/1p2kN1P/5RB1/2P2P2/2K4Q

#2

13 + 7

15 British Chess Magazine 1911
274 diagrammes 1973
5007 Zadachi i Etyudi 1995
5424 Versunkene Schatze 1998
133 The Problemist Supplement 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Rf5
      • 2.Re3#
  • Tries
    • 1.Sxg6?
      • threat
        • 2.Rf4#
      • 1...Kxd5
        • 2.Rc3#
      • 1...Rxg6+!
    • 1.Sd4+?
      • 1...Re5
        • 2.Rd3#
      • 1...Kxd4!
    • 1.Sc7+?
      • 1...Re5
        • 2.Rd3#
      • 1...Kd4!
    • 1.Sxg7+?
      • 1...Re5
        • 2.Rd3#
      • 1...Kd4!
    • 1.Sd8+?
      • 1...Re5
        • 2.Rd3#
      • 1...Kd4!
    • 1.Sf8+?
      • 1...Re5
        • 2.Rd3#
      • 1...Kd4!
    • 1.Qe1+?
      • 1...Kxf3
        • 2.Sd4#
        • 2.Qe2#
      • 1...Kf5!
  • Keys
    • 1.Se2!
      • 1...Rxg3+
        • 2.S6f4#
      • 1...Rg4+
        • 2.S6f4#
      • 1...Rxd5+
        • 2.Sg5#
      • 1...Re5+
        • 2.Rf4#
      • 1...Rf5+
        • 2.Re3#
      • 1...Kxd5
        • 2.Rc3#
      • 1...Rxf6
        • 2.Rxf6#
      • 1...gxf6
        • 2.Rxf6#
      • 1...b3
        • 2.Sc3#

There are these versions: 138336

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • R(c);P_PINS(G),SBLOCK::QAB(B)+R(E),DCHECK
  • Tries
    • Try
      • S(G);XR(e)
      • Threat
        • QAB(B)+R(E),DCHECK
      • Vars
        • K(b);S_FLIGHT,XP(I)::QAB(B)+R(E)
      • Refutation
        • R(c);CHECK,XS(G)
    • Try
      • S(J);CHECK
      • Vars
        • R(c);P_PINS(G),P_SPINR(c)::QAB(B)+R(E)
      • Refutation
        • K(b);P-FLIGHT,XS(J)
    • Try
      • S(J);CHECK
      • Vars
        • R(c);P_PINS(G),P_SPINR(c)::QAB(B)+R(E)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • S(J);CHECK,XP(g)
      • Vars
        • R(c);P_PINS(G),P_SPINR(c)::QAB(B)+R(E)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • S(J);CHECK
      • Vars
        • R(c);P_PINS(G),P_SPINR(c)::QAB(B)+R(E)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • S(J);CHECK
      • Vars
        • R(c);P_PINS(G),P_SPINR(c)::QAB(B)+R(E)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(G);
    • Vars
      • R(c);CHECK,N_GUARD,XB(F)::R(M)+S(J)
      • R(c);CHECK,N_GUARD::R(M)+S(J)
      • R(c);CHECK,SBLOCK,XP(I)::R(M)+S(J),DCHECK
      • R(c);CHECK,SBLOCK::QAB(B)+R(E),DCHECK
      • K(b);S_FLIGHT,XP(I)::QAB(B)+R(E)
      • R(e);OGATE,XP(K)::QAB(B)+R(E),XR(e)
      • P(g);OGATE,XP(K)::QAB(B)+R(E),XP(g)
      • P(a);N_GUARD::S(G)
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