MESON Chess Problem Database

Problem Display
PID: 149195 (6b1/1Q2P1p1/1pPBR3/1n1k1B2/1K6/1N1P4/8/2r5 w - - 0 1)

Kopyl, Valery Volodimirovich

Best Problems, 2010

6b1/1Q2P1p1/1pPBR3/1n1k1B2/1K6/1N1P4/8/2r5

#2

9 + 6

15148 Sadier Collection 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.c7#
    • 1...Rb1
      • 2.c7#
    • 1...Rd1
      • 2.c7#
    • 1...Re1
      • 2.c7#
    • 1...Rf1
      • 2.c7#
    • 1...Rg1
      • 2.c7#
    • 1...Rh1
      • 2.c7#
    • 1...Rc4+
      • 2.dxc4#
    • 1...Sc3
      • 2.c7#
  • Tries
    • 1.Qd7?
      • threat
        • 2.Be4#
        • 2.Re5#
      • 1...Rc4+
        • 2.dxc4#
      • 1...Bxe6
        • 2.Be4#
        • 2.Bxe6#
      • 1...Sxd6
        • 2.Be4#
        • 2.Qxd6#
      • 1...Bh7
        • 2.Re5#
      • 1...Sc3
        • 2.Bh2#
        • 2.Bg3#
        • 2.Bf4#
        • 2.Bc5#
        • 2.Be5#
        • 2.Bc7#
        • 2.Bb8#
        • 2.Re5#
      • 1...Re1!
    • 1.e8Q?
      • threat
        • 2.Be4#
      • 1...Rc4+
        • 2.dxc4#
      • 1...Bxe6
        • 2.Qxe6#
      • 1...Sxd6
        • 2.Re5#
      • 1...Re1
        • 2.c7#
      • 1...Sc3
        • 2.c7#
      • 1...Bh7!
  • Keys
    • 1.e8S!
      • threat
        • 2.Re5#
      • 1...Rc4+
        • 2.dxc4#
      • 1...Bxe6
        • 2.Be4#
      • 1...Sxd6
        • 2.Sc7#
      • 1...Re1
        • 2.c7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • R(a);N_GUARD::QAB(H)+P(E)
    • R(a);N_GUARD,P_PINS(A)::QAB(H)+P(E)
    • R(a);CHECK,OGATE::P(B),XR(a)
    • S(b);S_CUTR(a)::QAB(H)+P(E)
  • Tries
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);CHECK,OGATE::P(B),XR(a)
        • B(f);::R1(G)
      • Refutation
        • R(a);
    • Try
      • P(I);
      • Threat
        • B(D)
      • Vars
        • R(a);CHECK,OGATE::P(B),XR(a)
        • B(f);OGATE,XR(G)::QAB1(I),XB(f)
        • S(b);SBLOCK,XB(F)::R1(G)
        • R(a);N_GUARD::QAB(H)+P(E)
        • S(b);S_CUTR(a)::QAB(H)+P(E)
      • Refutation
        • B(f);
  • Actual
    • P(I);
    • Threat
      • R1(G)
    • Vars
      • R(a);CHECK,OGATE::P(B),XR(a)
      • B(f);SBLOCK,XR(G)::B(D)
      • S(b);N_GUARD,XB(F)::S(I)
      • R(a);N_GUARD::QAB(H)+P(E)
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