MESON Chess Problem Database

Problem Display
PID: 259623 (K3Q3/P1b1R2p/1N2b2r/2p2B1n/Rq3kPB/8/5P2/4N1n1 w - - 0 1)

Fazylov, D

Pravda Vostoka, 1950

(First published on Sun Feb 12 1950)

K3Q3/P1b1R2p/1N2b2r/2p2B1n/Rq3kPB/8/5P2/4N1n1

#2

11 + 9

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4+
      • 2.Rxe4#
    • 1...Bc4
      • 2.Re4#
    • 1...Bd5+
      • 2.Sxd5#
    • 1...Bd7
      • 2.Sd5#
    • 1...Bc8
      • 2.Sd5#
    • 1...Bb8
      • 2.Qxb8#
      • 2.axb8Q#
      • 2.axb8B#
    • 1...Sf3
      • 2.Sd3#
  • Keys
    • 1.Qd7!
      • threat
        • 2.Qxc7#
      • 1...Qe4+
        • 2.Rxe4#
      • 1...Bd5+
        • 2.Sxd5#
      • 1...Ke5
        • 2.Sd3#
      • 1...Bxf5
        • 2.Qxf5#
      • 1...Bxd7
        • 2.Sd5#
      • 1...Bxb6
        • 2.Qd6#
      • 1...Ba2
        • 2.Qd2#
      • 1...Bb3
        • 2.Qd2#
      • 1...Bc4
        • 2.Re4#
      • 1...Bf7
        • 2.Qd2#
      • 1...Bg8
        • 2.Qd2#
      • 1...Be5
        • 2.Qd2#
      • 1...Bd6
        • 2.Qxd6#
      • 1...Bb8
        • 2.axb8Q#
        • 2.axb8B#
      • 1...Bd8
        • 2.Qd6#
      • 1...Sf3
        • 2.Sd3#
      • 1...c4
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 1
  • Sets
    • Q(b);CHECK,OGATE::R1(C),XQ(b)
    • B(f);N_SPINQ(b),OGATE::R1(I)
    • B(f);CHECK,N_GUARD::S(G),XB(f)
    • B(f);N_GUARD::S(G)
    • S(a);SBLOCK::S(A)
  • Actual
    • Q(K);
    • Threat
      • QAB(K),XB(h)
    • Vars
      • Q(b);CHECK,OGATE::R1(C),XQ(b)
      • B(f);CHECK,N_GUARD::S(G),XB(f)
      • K(c);N_GUARD,N_SPINQ(b),P_SPINB(f),S_FLIGHT::S(A)
      • B(f);OGATE,XB(F)::QAR1(K),XB(f)
      • B(f);N_GUARD,XQ(K)::S(G)
      • B(h);N_GUARD,XS(G)::QAB(K)
      • B(f);::QAB(K)
      • B(f);N_SPINQ(b),OGATE::R1(I)
      • B(h);SBLOCK::QAB(K)
      • B(h);N_GUARD::QAB(K),XB(h)
      • B(h);OGATE::PXB(h)=Q
      • B(h);N_GUARD::QAB(K)
      • S(a);SBLOCK::S(A)
      • P(d);N_GUARD,N_SPINQ(b),S_CUTQ(b)::QAR2(K)
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