MESON Chess Problem Database

Problem Display
PID: 253685 (3b4/3r2p1/1p4rq/1p3p2/1Bk2pbR/2N3R1/P1N1P3/5BKQ w - - 0 1)

Rietveld, Johannes Jacob

Western Morning News, 1921

(First published on Sat May 21 1921)

3b4/3r2p1/1p4rq/1p3p2/1Bk2pbR/2N3R1/P1N1P3/5BKQ

#2

10 + 11

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.exd3#
    • 1...Rd5
      • 2.Qxd5#
    • 1...Ra7
      • 2.Qd5#
    • 1...Rb7
      • 2.Qd5#
    • 1...Rc7
      • 2.Qd5#
    • 1...Re7
      • 2.Qd5#
    • 1...Rf7
      • 2.Qd5#
    • 1...Bf6
      • 2.Qc6#
  • Tries
    • 1.Sd1?
      • threat
        • 2.Sb2#
        • 2.Rc3#
      • 1...Rxd1
        • 2.Rc3#
      • 1...Bxe2
        • 2.Sb2#
      • 1...fxg3
        • 2.Sb2#
      • 1...Bf3
        • 2.Sde3#
      • 1...Rd3
        • 2.Sb2#
        • 2.exd3#
      • 1...Bh3
        • 2.Sb2#
        • 2.Sde3#
      • 1...Bh5
        • 2.Sb2#
        • 2.Sde3#
      • 1...Bf6
        • 2.Qc6#
      • 1...f3!
    • 1.Qe4+?
      • 1...Rd4
        • 2.Qxd4#
      • 1...fxe4!
    • 1.e3+?
      • 1...Rd3
        • 2.Qd5#
      • 1...Be2!
    • 1.e4+?
      • 1...Rd3
        • 2.Bxd3#
      • 1...Be2!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Rc3#
      • 1...Bxe2
        • 2.Bxe2#
      • 1...fxg3
        • 2.e3#
      • 1...Bf3
        • 2.Sde3#
      • 1...f3
        • 2.e4#
      • 1...Bh3
        • 2.Sde3#
      • 1...Bh5
        • 2.Sde3#
      • 1...Bf6
        • 2.Sxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 7
  • Sets
    • R(i);OGATE::P(F),XR(i)
    • R(i);N_GUARD::QAB1(C),XR(i)
    • R(i);N_GUARD::QAB1(C)
    • B(k);S_CUTR(g)::QAR2(C)
  • Tries
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • R(i);P_PINB(A),XS(G)::R1(H)
        • B(c);P_PINR(H),P_SPINB(c),P_SPINP(b),XP(F)::S(G)
        • P(b);P_SPINB(c),XR(H)::S(G)
        • B(c);P_PINR(H),P_SPINP(b)::S(G)
        • B(k);S_CUTR(g)::QAR2(C)
      • Refutation
        • P(b);P_SPINB(c)
    • Try
      • Q(C);CHECK
      • Vars
        • R(i);N_GUARD,P_SPINR(i)::QAR1(C),XR(i)
      • Refutation
        • P(e);XQ(C)
    • Try
      • P(F);CHECK
      • Vars
        • R(i);P_SPINR(i)::QAB1(C)
      • Refutation
        • B(c);P_PINR(H),P_SPINB(c),P_SPINP(b)
    • Try
      • P(F);CHECK
      • Vars
        • R(i);N_GUARD,P_SPINR(i)::B(A),XR(i)
      • Refutation
        • B(c);P_PINR(H),P_SPINB(c)
  • Actual
    • S(G);
    • Threat
      • R1(H)
    • Vars
      • B(c);OGATE,P_PINR(H),P_SPINB(c),P_SPINP(b),XP(F)::B(A),XB(c)
      • P(b);P_SPINB(c),XR(H)::B(A)+P(F)
      • B(c);P_PINR(H),P_SPINP(b)::S(G)
      • P(b);P_SPINB(c)::B(A)+P(F)
      • B(k);N_GUARD,S_CUTR(g)::S(G),XP(f)
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