MESON Chess Problem Database

Problem Display
PID: 89846 (5bQK/1R1pP1p1/2Nk4/1PpBp2b/4pr2/8/r4R2/8 w - - 0 1)

Ivanov, Vadim Aleksandrovich

Die Schwalbe, 1999

5bQK/1R1pP1p1/2Nk4/1PpBp2b/4pr2/8/r4R2/8

#2

8 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rg4
      • 2.exf8Q#
      • 2.exf8B#
    • 1...Rh4
      • 2.exf8Q#
      • 2.exf8B#
    • 1...Bd1
      • 2.e8S#
    • 1...Be2
      • 2.e8S#
    • 1...Bf3
      • 2.e8S#
    • 1...Bg4
      • 2.e8S#
    • 1...dxc6
      • 2.Qe6#
    • 1...g6
      • 2.e8S#
  • Tries
    • 1.Bxa2?
      • threat
        • 2.Rd2#
        • 2.Qd5#
      • 1...Rxf2
        • 2.Qd5#
      • 1...dxc6
        • 2.Rd2#
        • 2.Qe6#
      • 1...Rf3
        • 2.Qd5#
      • 1...Rf7
        • 2.Rd2#
        • 2.e8S#
      • 1...Be2
        • 2.Qd5#
        • 2.e8S#
      • 1...Bf7
        • 2.exf8Q#
        • 2.exf8B#
      • 1...e3
        • 2.Qd5#
      • 1...c4!
    • 1.Bb3?
      • threat
        • 2.Qd5#
      • 1...dxc6
        • 2.Qe6#
      • 1...Rd2
        • 2.Rxd2#
      • 1...Rf7
        • 2.e8S#
      • 1...Bf7
        • 2.exf8Q#
        • 2.exf8B#
      • 1...c4!
  • Keys
    • 1.Bc4!
      • threat
        • 2.Qd5#
      • 1...dxc6
        • 2.Qe6#
      • 1...Rd2
        • 2.Rxd2#
      • 1...Rf7
        • 2.e8S#
      • 1...Bf7
        • 2.exf8Q#
        • 2.exf8B#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • R(c);N_GUARD::PXB(j)=Q
    • B(f);N_GUARD::P=S
    • P(h);N_GUARD,XS(D)::QAR1(G)
    • P(i);S_CUTB(f)::P=S
  • Tries
    • Try
      • B(C);XR(a)
      • Threat
        • DUALS(2)
      • Vars
        • R(c);XR(A)::QAR1(G)
        • R(c);::QAR1(G)
        • B(f);S_CUTR(c)::PXB(j)=Q
        • P(b);::QAR1(G)
      • Refutation
        • P(d);
    • Try
      • B(C);
      • Threat
        • QAR1(G)
      • Vars
        • P(h);N_GUARD,XS(D)::QAR1(G)
        • R(a);N_GUARD::R(A),XR(a)
        • R(c);S_CUTB(f)::P=S
        • B(f);S_CUTR(c)::PXB(j)=Q
      • Refutation
        • P(d);
  • Actual
    • B(C);
    • Threat
      • QAR1(G)
    • Vars
      • P(h);N_GUARD,XS(D)::QAR1(G)
      • R(a);N_GUARD::R(A),XR(a)
      • R(c);S_CUTB(f)::P=S
      • B(f);S_CUTR(c)::PXB(j)=Q
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