MESON Chess Problem Database

Problem Display
PID: 231837 (2RQ2N1/4R3/1p1p4/1P1p1P2/2nk1p2/n3pB2/1P5B/2K1N3 w - - 0 1)

Schneider, M?

Schweizerische Schachzeitung, 1987

2RQ2N1/4R3/1p1p4/1P1p1P2/2nk1p2/n3pB2/1P5B/2K1N3

#2

11 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sxb2
      • 2.Qxb6#
    • 1...Sd2
      • 2.Qxb6#
    • 1...Sa5
      • 2.Qxb6#
    • 1...Se5
      • 2.Qxb6#
  • Tries
    • 1.Be2?
      • threat
        • 2.Sf3#
      • 1...Sd2
        • 2.Qxb6#
      • 1...f3
        • 2.Sxf3#
      • 1...Se5!
    • 1.Re5?
      • threat
        • 2.Rxd5#
      • 1...Kxe5
        • 2.Qf6#
      • 1...Sxe5
        • 2.Qxb6#
      • 1...dxe5
        • 2.Qxd5#
      • 1...e2!
    • 1.Qxd6?
      • threat
        • 2.Re4#
        • 2.Qxf4#
        • 2.Qxd5#
      • 1...Sd2
        • 2.Qe5#
        • 2.Qxd5#
        • 2.Qxb6#
        • 2.Qf6#
      • 1...Se5
        • 2.Qxe5#
        • 2.Qxd5#
        • 2.Qxb6#
      • 1...Sxd6!
  • Keys
    • 1.Rxe3!
      • 1...Kxe3
        • 2.Bg1#
      • 1...Sxb5
        • 2.Sc2#
      • 1...Sxb2
        • 2.Qxb6#
      • 1...Sxe3
        • 2.Qf6#
      • 1...fxe3
        • 2.Qh4#
      • 1...Sb1
        • 2.Sc2#
      • 1...Sc2
        • 2.Sxc2#
      • 1...Sd2
        • 2.Qxb6#
      • 1...Sa5
        • 2.Qxb6#
      • 1...Se5
        • 2.Qxb6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD,XP(C)::QAB(J),XP(g)
    • S(c);N_GUARD::QAB(J),XP(g)
  • Tries
    • Try
      • B(E);
      • Threat
        • S(B)
      • Vars
        • S(c);N_GUARD::QAB(J),XP(g)
        • P(e);::S(B),XP(e)
      • Refutation
        • S(c);
    • Try
      • R(H);
      • Threat
        • R1(H),XP(f)
      • Vars
        • K(d);OGATEB,P_SPINP(e),S_FLIGHT,XR(H)::QAB1(J)
        • S(c);N_GUARD,SBLOCK,XR(H)::QAB(J),XP(g)
        • P(h);OGATE,P_SPINP(f),XR(H)::QAR1(J),XP(f)
      • Refutation
        • P(b);
    • Try
      • Q(J);P_PINP(f),XP(h)
      • Threat
        • DUALS(3)
      • Refutation
        • S(c);N_SPINP(f),XQ(J)
  • Actual
    • R(H);XP(b)
    • Vars
      • K(d);OGATEB,S_FLIGHT,XR(H)::B(D)
      • S(a);N_GUARD,XP(F)::S(B)
      • S(c);N_GUARD,XP(C)::QAB(J),XP(g)
      • S(c);N_GUARD,SBLOCK,XR(H)::QAB(J)
      • P(e);OGATEB,SBLOCK,XR(H)::QAR(J)
      • S(a);N_GUARD::S(B)
      • S(a);N_GUARD::S(B),XS(a)
      • S(c);N_GUARD::QAB(J),XP(g)
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