MESON Chess Problem Database

Problem Display
PID: 203754 (8/3r1pK1/p4R2/Qp2k3/1N3R2/1N1p1bp1/8/5r2 w - - 0 1)

Seilberger, Johann Joseph Petrus Adrianus

Western Daily Mercury, 1920

(First published on Fri Oct 1 1920)

8/3r1pK1/p4R2/Qp2k3/1N3R2/1N1p1bp1/8/5r2

#2

6 + 9

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Sc6#
    • 1...Rc7
      • 2.Qxc7#
    • 1...Bd5
      • 2.Sxd3#
  • Tries
    • 1.Sxd3+?
      • 1...Kd5
        • 2.Rd4#
      • 1...Rxd3!
    • 1.Sc6+?
      • 1...Kd5
        • 2.Rd4#
      • 1...Bxc6!
    • 1.Qc7+?
      • 1...Rd6
        • 2.Qxd6#
      • 1...Rxc7!
    • 1.Qa1+?
      • 1...Rd4
        • 2.Qxd4#
      • 1...Rxa1!
    • 1.Qxb5+?
      • 1...Rd5
        • 2.Sxd3#
        • 2.Sc6#
        • 2.Qe8#
      • 1...Bd5
        • 2.Sxd3#
        • 2.Sc6#
      • 1...axb5!
  • Keys
    • 1.Sd2!
      • threat
        • 2.Sc4#
      • 1...Be4
        • 2.Rxe4#
      • 1...Rc1
        • 2.Sxf3#
      • 1...Rd4
        • 2.R4f5#
      • 1...Rd5
        • 2.Sc6#
      • 1...Rc7
        • 2.Qxc7#
      • 1...Bd5
        • 2.Sxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(h);N_SPINP(e),SBLOCK,S_CUTB(c)::S(B)
    • R(h);N_GUARD::QAB(D),XR(h)
    • B(c);N_SPINP(e),SBLOCK,S_CUTR(h)::S(B),XP(b)
  • Tries
    • Try
      • S(B);CHECK,XP(b)
      • Vars
        • K(f);P-FLIGHT::R1(C)
      • Refutation
        • R(h);XS(B)
    • Try
      • S(B);CHECK
      • Vars
        • K(f);P-FLIGHT::R1(C)
      • Refutation
        • B(c);XS(B)
    • Try
      • Q(D);CHECK,N_PINP(e)
      • Vars
        • R(h);N_GUARD,P_SPINR(h)::QAB1(D),XR(h)
      • Refutation
        • R(h);XQ(D)
    • Try
      • Q(D);CHECK,N_PINP(e)
      • Vars
        • R(h);N_GUARD,P_SPINR(h)::QAB1(D),XR(h)
      • Refutation
        • R(a);XQ(D)
    • Try
      • Q(D);CHECK,XP(e)
      • Refutation
        • P(g);XQ(D)
  • Actual
    • S(A);
    • Threat
      • S(A)
    • Vars
      • B(c);N_GUARD::R1(C),XB(c)
      • R(a);N_GUARD::S(A),XB(c)
      • R(h);SBLOCK::R1(C)
      • R(h);N_SPINP(e),SBLOCK,S_CUTB(c)::S(B)
      • R(h);N_GUARD::QAB(D),XR(h)
      • B(c);N_SPINP(e),SBLOCK,S_CUTR(h)::S(B),XP(b)
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