MESON Chess Problem Database

Problem Display
PID: 171466 (7b/8/2n1P3/3kP2r/5Qnr/BN1P1P1p/4N1B1/2R1K3 w - - 0 1)

Antipov, Viacheslav Pavlovich

Bulletin of the Central Chess Club of USSR, 1982

7b/8/2n1P3/3kP2r/5Qnr/BN1P1P1p/4N1B1/2R1K3

#2

11 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe5
      • 2.Qc4#
    • 1...Bxe5
      • 2.Qc4#
  • Tries
    • 1.Rxc6?
      • threat
        • 2.Rd6#
        • 2.Qe4#
      • 1...Rxe5
        • 2.Rd6#
        • 2.Qc4#
      • 1...Bxe5
        • 2.Qc4#
        • 2.Qe4#
      • 1...Sxe5
        • 2.Rd6#
      • 1...Sf2
        • 2.Rd6#
      • 1...Sh2
        • 2.Rd6#
      • 1...Se3
        • 2.Rd6#
      • 1...Sf6
        • 2.Rd6#
      • 1...Sh6
        • 2.Rd6#
      • 1...Kxc6!
    • 1.Qf5?
      • threat
        • 2.Sc3#
        • 2.Sf4#
        • 2.Rc5#
      • 1...Bxe5
        • 2.Sc3#
        • 2.Sf4#
      • 1...Sgxe5
        • 2.Sc3#
      • 1...Scxe5
        • 2.Sf4#
      • 1...Sf2
        • 2.Sc3#
        • 2.Rc5#
      • 1...Sh2
        • 2.Sc3#
        • 2.Rc5#
      • 1...Se3
        • 2.Sc3#
        • 2.Rc5#
      • 1...Sf6
        • 2.Sc3#
        • 2.Rc5#
      • 1...Sh6
        • 2.Sc3#
        • 2.Rc5#
      • 1...Sb4
        • 2.Sf4#
        • 2.Rc5#
      • 1...Sd4
        • 2.Sf4#
        • 2.Rc5#
      • 1...Sa5
        • 2.Sf4#
        • 2.Rc5#
      • 1...Sa7
        • 2.Sf4#
        • 2.Rc5#
      • 1...Se7
        • 2.Sf4#
        • 2.Rc5#
      • 1...Sb8
        • 2.Sf4#
        • 2.Rc5#
      • 1...Sd8
        • 2.Sf4#
        • 2.Rc5#
      • 1...Rxf5!
  • Keys
    • 1.Qf7!
      • threat
        • 2.Rc5#
      • 1...Kxe5
        • 2.f4#
      • 1...Rxe5
        • 2.Qd7#
      • 1...Bxe5
        • 2.e7#
      • 1...Sgxe5
        • 2.Sc3#
      • 1...Scxe5
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(e);P_PINS(C),SBLOCK,XP(J)::QAB1(I)
    • B(g);SBLOCK,XP(J)::QAB1(I)
  • Tries
    • Try
      • R(A);XS(f)
      • Threat
        • DUALS(2)
      • Vars
        • S(b);XP(J)::R1(A)
        • S(b);::R1(A)
      • Refutation
        • K(d);S_FLIGHT,XR(A)
    • Try
      • Q(I);
      • Threat
        • DUALS(3)
      • Vars
        • S(b);P_SPINS(b),XP(J)::S(C)
        • S(f);P_SPINS(f),XP(J)::S(C)
      • Refutation
        • R(e);XQ(I)
  • Actual
    • Q(I);
    • Threat
      • R1(A)
    • Vars
      • K(d);P-FLIGHT,XP(J)::P(H)
      • R(e);P_PINS(C),SBLOCK,XP(J)::QAR2(I)
      • B(g);SBLOCK,XP(J)::QAB(I)+P(K)
      • S(b);SBLOCK,XP(J)::S(C)
      • S(f);SBLOCK,XP(J)::S(C)
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