MESON Chess Problem Database

Problem Display
PID: 240359 (1r4b1/b2P4/2NK1p2/1p3Q2/PNk5/3RB3/4n3/1r2n3 w - - 0 1)

Paslack, Rainer

Problem-Forum, 2016

1r4b1/b2P4/2NK1p2/1p3Q2/PNk5/3RB3/4n3/1r2n3

#2

8 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb4
      • 2.Sa5#
    • 1...Rb6
      • 2.Qc5#
    • 1...Ra8
      • 2.Qxb5#
    • 1...Rc8
      • 2.Qxb5#
    • 1...Rd8
      • 2.Qxb5#
    • 1...Re8
      • 2.Qxb5#
    • 1...Rf8
      • 2.Qxb5#
    • 1...Bc5+
      • 2.Qxc5#
    • 1...Bb6
      • 2.Qxb5#
    • 1...Bd5
      • 2.Qxd5#
    • 1...Be6
      • 2.Qxe6#
    • 1...Bh7
      • 2.Qe6#
      • 2.Qd5#
    • 1...Sxd3
      • 2.Qxd3#
  • Tries
    • 1.Bb6?
      • threat
        • 2.Qxb5#
        • 2.Qc5#
      • 1...Rxb4
        • 2.Sa5#
      • 1...Rxb6
        • 2.Qc5#
      • 1...Bxb6
        • 2.Qxb5#
      • 1...Sxd3
        • 2.Qxd3#
      • 1...bxa4
        • 2.Qc5#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Sd4
        • 2.Qc5#
      • 1...Sc3!
    • 1.Bxa7?
      • threat
        • 2.Qc5#
      • 1...Rxb4
        • 2.Sa5#
      • 1...Sxd3
        • 2.Qxd3#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Sc3!
  • Keys
    • 1.Bd2!
      • threat
        • 2.Sa5#
      • 1...Bc5+
        • 2.Qxc5#
      • 1...Sxd3
        • 2.Qxd3#
      • 1...Sc3
        • 2.Rxc3#
      • 1...Rb6
        • 2.Qc5#
      • 1...Bb6
        • 2.Qxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 8
  • Sets
    • R(a);SBLOCK,XS(D)::S(F)
    • R(h);P_PINS(F),S_CUTB(g)::QAR1(E)
    • R(h);N_GUARD::QAB1(E),XP(e)
    • R(h);N_GUARD,P_PINP(H)::QAB1(E),XP(e)
    • B(g);CHECK,N_GUARD::QAR1(E),XB(g)
    • B(g);S_CUTR(h)::QAB1(E),XP(e)
    • B(i);N_GUARD::QAB1(E),XB(i)
    • B(i);N_GUARD::QAB(E),XB(i)
    • S(b);OGATE,XR(A)::QAB1(E),XS(b)
  • Tries
    • Try
      • B(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);SBLOCK,XS(D)::S(F)
        • R(h);P_PINS(F),XB(B)::QAR1(E)
        • B(g);XB(B)::QAB1(E),XP(e)
        • S(b);OGATE,XR(A)::QAB1(E),XS(b)
        • P(e);XP(C)::QAR1(E)
        • B(i);N_GUARD::QAB1(E),XB(i)
        • S(c);::QAR1(E)
      • Refutation
        • S(c);
    • Try
      • B(B);XB(g)
      • Threat
        • QAR1(E)
      • Vars
        • R(a);SBLOCK,XS(D)::S(F)
        • S(b);OGATE,XR(A)::QAB1(E),XS(b)
        • B(i);N_GUARD::QAB1(E),XB(i)
      • Refutation
        • S(c);
  • Actual
    • B(B);
    • Threat
      • S(F)
    • Vars
      • B(g);CHECK,N_GUARD::QAR1(E),XB(g)
      • S(b);OGATE,XR(A)::QAB1(E),XS(b)
      • S(c);N_GUARD::R1(A),XS(c)
      • R(h);P_PINS(F),S_CUTB(g)::QAR1(E)
      • B(g);S_CUTR(h)::QAB1(E),XP(e)
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