MESON Chess Problem Database

Problem Display
PID: 241327 (7b/2r3kP/Q5Np/1p1P4/4B3/3PpP1K/1qb5/B1R3R1 w - - 0 1)

Gavrilov, Constantin Grigorievich

Revista Romana de Sah, 1930

7b/2r3kP/Q5Np/1p1P4/4B3/3PpP1K/1qb5/B1R3R1

#2

11 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxh7
      • 2.Sf4#
      • 2.Sh4#
      • 2.Se5#
      • 2.Se7#
      • 2.Sf8#
    • 1...Bb1
      • 2.Rxc7#
    • 1...Bd1
      • 2.Rxc7#
    • 1...Bb3
      • 2.Rxc7#
    • 1...Bxd3
      • 2.Rxc7#
    • 1...Ba4
      • 2.Rxc7#
  • Tries
    • 1.Sxh8+?
      • 1...Kxh8
        • 2.Rg8#
      • 1...Kf8!
    • 1.Bxb2+?
      • 1...Kf7
        • 2.Qe6#
      • 1...Kxh7
        • 2.Sf4#
        • 2.Sh4#
        • 2.Se5#
        • 2.Se7#
        • 2.Sf8#
        • 2.Sxh8#
      • 1...Rc3!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Se5#
      • 1...Kf7
        • 2.Qf8#
      • 1...Kxh7
        • 2.Sf4#
        • 2.Sh4#
        • 2.Se5#
        • 2.Se7#
        • 2.Sf8#
      • 1...Bxd3
        • 2.Rxc7#
      • 1...Qe5
        • 2.Sxe5#
      • 1...Qf6
        • 2.Qxc7#
      • 1...Re7
        • 2.Qxe7#
      • 1...Bb1
        • 2.Rxc7#
      • 1...Bd1
        • 2.Rxc7#
      • 1...Bb3
        • 2.Rxc7#
      • 1...Ba4
        • 2.Rxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(b);OGATE::R(B),XR(f)
    • B(b);OGATE,XP(D)::R(B),XR(f)
  • Tries
    • Try
      • S(J);CHECK,XB(h)
      • Vars
        • K(g);OGATE,S_FLIGHT,XS(J)::R1(C)
      • Refutation
        • K(g);N_SPINQ(a),S_FLIGHT
    • Try
      • B(A);CHECK,XQ(a)
      • Vars
        • K(g);P-FLIGHT::QAB1(I)
      • Refutation
        • R(f);P_SPINR(f)
  • Actual
    • Q(I);
    • Threat
      • R(C)+S(J)
    • Vars
      • K(g);N_SPINQ(a),P-FLIGHT::QAR1(I)
      • B(b);OGATE,XP(D)::R(B),XR(f)
      • Q(a);::R(C)+S(J),XQ(a)
      • Q(a);::QAR(I),XR(f)
      • R(f);N_GUARD::QAR2(I),XR(f)
      • B(b);OGATE::R(B),XR(f)
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