MESON Chess Problem Database

Problem Display
PID: 232151 (2r5/1B1pPRN1/1P1k1p2/2p1qR1r/1bp2Bb1/5p1p/3P4/3Q1K2 w - - 0 1)

Vasilenko, Anatoly Grigorovich

Zadachi i Etyudi, 2001

2r5/1B1pPRN1/1P1k1p2/2p1qR1r/1bp2Bb1/5p1p/3P4/3Q1K2

#2

10 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Rc7
      • 2.e8S#
    • 1...Rf8
      • 2.exf8Q#
      • 2.exf8B#
    • 1...Bxd2
      • 2.Qxd2#
    • 1...Bc3
      • 2.dxc3#
    • 1...c3
      • 2.dxc3#
  • Tries
    • 1.d4?
      • threat
        • 2.dxe5#
      • 1...Qxf4
        • 2.dxc5#
      • 1...cxd4
        • 2.Qxd4#
      • 1...cxd4 ep
        • 2.Qxd3#
      • 1...Bd2!
    • 1.e8Q?
      • threat
        • 2.R7xf6#
        • 2.Rxd7#
        • 2.Qxd7#
        • 2.Qe7#
      • 1...Rxf5
        • 2.Rxd7#
        • 2.Qxd7#
        • 2.Qe7#
      • 1...Bxf5
        • 2.Qe7#
      • 1...Rc6
        • 2.Rxd7#
        • 2.Qxd7#
      • 1...Rh6
        • 2.Rxd7#
        • 2.Qxd7#
        • 2.Qe7#
      • 1...Rc7
        • 2.R7xf6#
        • 2.Qe7#
        • 2.Qf8#
      • 1...Rd8
        • 2.R7xf6#
        • 2.Qe7#
      • 1...Rxe8!
  • Keys
    • 1.Qxf3!
      • threat
        • 2.Qd5#
      • 1...Qxf4
        • 2.Qxf4#
      • 1...Bxf3
        • 2.R5xf6#
      • 1...Rc6
        • 2.e8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • R(l);N_GUARD::P=S
    • R(l);OGATE::PXR(l)=Q
    • B(c);OGATE,P_SPINB(c),XP(C)::QAR(A),XB(c)
    • B(c);OGATE::QAR(A)+P(C),XB(c)
    • P(d);OGATE::QAR(A)+P(C),XP(d)
  • Tries
    • Try
      • P(C);
      • Threat
        • QAR(A)+P(C)DCHECK,XQ(g)
      • Vars
        • Q(g);N_SPINQ(g),XB(D)::QAR(A)+P(C)DCHECK,XP(f)
        • P(f);OGATE,P_SPINP(f),XP(C)::QAR2(A),XP(f)
        • P(d);EP,OGATEB,P_SPINP(d),XP(C)::QAR(A),XP(d)
      • Refutation
        • B(c);
    • Try
      • P(H);
      • Threat
        • DUALS(4)
      • Vars
        • B(e);XR(E)::QAB1(H)
      • Refutation
        • R(l);XQ(H)
  • Actual
    • Q(A);XP(a)
    • Threat
      • QAR1(A)
    • Vars
      • Q(g);N_SPINQ(g),OGATE,P_PINQ(A),XB(D)::QAB(A),XQ(g)
      • B(e);N_GUARD,XQ(A)::R(E),XP(j)
      • R(l);N_GUARD::P=S
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