MESON Chess Problem Database

Problem Display
PID: 230868 (1Q1R2Br/4p2N/2P5/2p1p1p1/p3k1P1/p3nnP1/3bR3/rN5K w - - 0 1)

Gavrilov, Constantin Grigorievich

Tidskrift for Schack, 1913

1Q1R2Br/4p2N/2P5/2p1p1p1/p3k1P1/p3nnP1/3bR3/rN5K

#2

10 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb1+
      • 2.Qxb1#
    • 1...Rxh7+
      • 2.Bxh7#
    • 1...Bc1
      • 2.Sc3#
    • 1...Se1
      • 2.Sxd2#
    • 1...Sg1
      • 2.Sxd2#
    • 1...Sh2
      • 2.Sxg5#
    • 1...Sh4
      • 2.Sxg5#
  • Tries
    • 1.Qb3?
      • threat
        • 2.Qc2#
        • 2.Qd5#
        • 2.Qd3#
      • 1...Rxb1+
        • 2.Qxb1#
      • 1...Rxh7+
        • 2.Bxh7#
      • 1...Se1
        • 2.Sxd2#
        • 2.Qd5#
      • 1...Sg1
        • 2.Sxd2#
        • 2.Qd5#
      • 1...Sh2
        • 2.Sxg5#
        • 2.Qd5#
      • 1...Sd4
        • 2.Bd5#
      • 1...Sh4
        • 2.Sxg5#
        • 2.Qd5#
      • 1...Ra2
        • 2.Qd5#
        • 2.Qd3#
      • 1...Bc3
        • 2.Qc2#
        • 2.Qd5#
      • 1...c4
        • 2.Qc2#
      • 1...e6
        • 2.Qc2#
        • 2.Qd3#
      • 1...axb3!
    • 1.Qb7?
      • threat
        • 2.c7#
      • 1...Rxb1+
        • 2.Qxb1#
      • 1...Rxh7+
        • 2.Bxh7#
      • 1...Sd4!
    • 1.c7?
      • threat
        • 2.Qb7#
        • 2.Qa8#
      • 1...Rxb1+
        • 2.Qxb1#
      • 1...Rxh7+
        • 2.Bxh7#
      • 1...Sd4!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Qd3#
      • 1...Rxb1+
        • 2.Qxb1#
      • 1...Rxh7+
        • 2.Bxh7#
      • 1...Se1
        • 2.Sxd2#
      • 1...Sg1
        • 2.Sxd2#
      • 1...Sh2
        • 2.Sxg5#
      • 1...Sd4
        • 2.Bd5#
      • 1...Sh4
        • 2.Sxg5#
      • 1...c4
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(a);CHECK,OGATE,P_PINS(G),XS(A)::QAB(H),XR(a)
    • R(l);CHECK,OGATE,XS(G)::B(J),XR(l)
    • B(b);N_PINS(A),P_PINS(G)::S(A)
    • S(e);N_PINS(A),P_PINS(G)::S(A),XB(b)
    • S(e);::S(G),XP(j)
  • Tries
    • Try
      • Q(H);
      • Threat
        • DUALS(3)
      • Vars
        • R(a);CHECK,OGATE,P_PINS(G),XS(A)::QAB(H),XR(a)
        • R(l);CHECK,OGATE,XS(G)::B(J),XR(l)
        • S(e);SBLOCK::B(J)
        • P(h);::QAB(H)
      • Refutation
        • P(f);XQ(H)
    • Try
      • Q(H);
      • Threat
        • QAB(H)+P(F)
      • Vars
        • R(a);CHECK,OGATE,P_PINS(G),XS(A)::QAB(H),XR(a)
        • R(l);CHECK,OGATE,XS(G)::B(J),XR(l)
      • Refutation
        • S(e);
    • Try
      • P(F);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);CHECK,OGATE,P_PINS(G),XS(A)::QAB(H),XR(a)
        • R(l);CHECK,OGATE,XS(G)::B(J),XR(l)
      • Refutation
        • S(e);
  • Actual
    • Q(H);
    • Threat
      • QAB1(H)
    • Vars
      • R(a);CHECK,OGATE,P_PINS(G),XS(A)::QAB(H),XR(a)
      • R(l);CHECK,OGATE,XS(G)::B(J),XR(l)
      • S(e);N_PINS(A),P_PINS(G)::S(A),XB(b)
      • S(e);::S(G),XP(j)
      • S(e);SBLOCK::B(J)
      • P(h);OGATE::QAB1(H)
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