MESON Chess Problem Database

Problem Display
PID: 154257 (K1Q4B/7p/1p1P4/3k1NRR/N1pn4/2p5/1r6/1Br2b1q w - - 0 1)

Gavrilov, Constantin Grigorievich

Tidskrift for Schack, 1909

K1Q4B/7p/1p1P4/3k1NRR/N1pn4/2p5/1r6/1Br2b1q

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rcxb1
      • 2.Sxc3#
    • 1...Rd1
      • 2.Sxc3#
    • 1...Re1
      • 2.Sxc3#
    • 1...Rd2
      • 2.Sxb6#
    • 1...Re2
      • 2.Sxb6#
    • 1...Rf2
      • 2.Sxb6#
    • 1...Rg2
      • 2.Sxb6#
    • 1...Rh2
      • 2.Sxb6#
    • 1...Sc2
      • 2.Sxc3#
    • 1...Sb3
      • 2.Sxb6#
    • 1...Sb5
      • 2.Sxb6#
    • 1...Sc6
      • 2.Qg8#
    • 1...Se6
      • 2.Qb7#
    • 1...c2
      • 2.Sc3#
    • 1...b5
      • 2.Sb6#
  • Tries
    • 1.Rh4?
      • threat
        • 2.Rxd4#
      • 1...Sxf5
        • 2.Rd4#
      • 1...Qe4
        • 2.Bxe4#
      • 1...Qg1
        • 2.Be4#
      • 1...Rd1
        • 2.Sxc3#
      • 1...Rd2
        • 2.Sxb6#
      • 1...Sc2
        • 2.Sxc3#
      • 1...Se2
        • 2.Qxc4#
      • 1...Sb3
        • 2.Sxb6#
      • 1...Sf3
        • 2.Be4#
      • 1...Sb5
        • 2.Sxb6#
      • 1...Sc6
        • 2.Qg8#
      • 1...Se6
        • 2.Qb7#
      • 1...Qxh4!
    • 1.Qb7+?
      • 1...Sc6
        • 2.Qf7#
      • 1...Ke6!
  • Keys
    • 1.Rg4!
      • threat
        • 2.Rxd4#
      • 1...Sxf5
        • 2.Rd4#
      • 1...Qe4
        • 2.Bxe4#
      • 1...Qg1
        • 2.Be4#
      • 1...Qh4
        • 2.Be4#
      • 1...Rd1
        • 2.Sxc3#
      • 1...Rd2
        • 2.Sxb6#
      • 1...Sc2
        • 2.Sxc3#
      • 1...Se2
        • 2.Qxc4#
      • 1...Sb3
        • 2.Sxb6#
      • 1...Sf3
        • 2.Be4#
      • 1...Sb5
        • 2.Sxb6#
      • 1...Sc6
        • 2.Qg8#
      • 1...Se6
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 8
  • Sets
    • R(a);N_GUARD,XB(A)::S(B),XP(e)
    • R(a);N_GUARD::S(B),XP(e)
    • R(d);N_GUARD::S(B),XP(i)
    • S(g);S_CUTR(a)::S(B),XP(e)
    • S(g);S_CUTR(d)::S(B),XP(i)
    • S(g);N_GUARD,SBLOCK::QAB(H)
    • P(e);S_CUTR(a)::S(B)
    • P(i);S_CUTR(d)::S(B)
  • Tries
    • Try
      • R(E);
      • Threat
        • R1(E),XS(g)
      • Vars
        • S(g);P_SPINS(g),XS(C)::R1(E)
        • Q(c);N_GUARD::B(A),XQ(c)
        • Q(c);N_GUARD::B(A)
        • R(a);N_GUARD::S(B),XP(e)
        • R(d);N_GUARD::S(B),XP(i)
        • S(g);S_CUTR(a)::S(B),XP(e)
        • S(g);S_CUTB(b)::QAB1(H),XP(f)
        • S(g);S_CUTR(d)::S(B),XP(i)
        • S(g);S_CUTQ(c)::B(A)
        • S(g);N_GUARD,SBLOCK::QAB(H)
      • Refutation
        • Q(c);XR(E)
    • Try
      • Q(H);CHECK
      • Vars
        • S(g);N_GUARD,P_SPINS(g),SBLOCK::QAB(H)
      • Refutation
        • K(h);P_PINQ(H),S_FLIGHT
  • Actual
    • R(D);
    • Threat
      • R1(D),XS(g)
    • Vars
      • S(g);P_SPINS(g),XS(C)::R1(D)
      • Q(c);N_GUARD::B(A),XQ(c)
      • Q(c);N_GUARD::B(A)
      • R(a);N_GUARD::S(B),XP(e)
      • R(d);N_GUARD::S(B),XP(i)
      • S(g);S_CUTR(a)::S(B),XP(e)
      • S(g);S_CUTB(b)::QAB1(H),XP(f)
      • S(g);S_CUTR(d)::S(B),XP(i)
      • S(g);S_CUTQ(c)::B(A)
      • S(g);N_GUARD,SBLOCK::QAB(H)
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