MESON Chess Problem Database

Problem Display
PID: 141523 (8/2RN1B1p/rb2n3/p3P3/R2pk1P1/2P2nK1/2P2P2/1Q6 w - - 0 1)

Brummelman, Derk Hendrikus (AKA Bruma, DH)

3rd HM., 07. Kwik-Toernooi, 1976

8/2RN1B1p/rb2n3/p3P3/R2pk1P1/2P2nK1/2P2P2/1Q6

#2

11 + 8

102 Probleemblad 1976

SOLUTION

  • SOUND
  • Sets
    • 1...Sxe5
      • 2.Sf6#
  • Tries
    • 1.Bg6+?
      • 1...Kd5
        • 2.Qa2#
        • 2.Qb3#
        • 2.c4#
      • 1...hxg6!
    • 1.Qe1+?
      • 1...Kd5
        • 2.Sf6#
        • 2.c4#
      • 1...Sxe1!
    • 1.Qh1?
      • threat
        • 2.Qxf3#
      • 1...Kd5
        • 2.Qxf3#
      • 1...Sg5!
    • 1.Qb5?
      • threat
        • 2.Sf6#
        • 2.Qc6#
      • 1...Bxc7
        • 2.Sf6#
      • 1...Sxe5
        • 2.Sf6#
        • 2.Qxe5#
      • 1...Sxc7
        • 2.Sf6#
        • 2.Qe2#
        • 2.Qd3#
      • 1...Ba7
        • 2.Sf6#
      • 1...Sf4
        • 2.Sf6#
      • 1...Sc5
        • 2.Qe2#
        • 2.Qc6#
      • 1...Sd8
        • 2.Sf6#
        • 2.Bd5#
        • 2.Qe2#
        • 2.Qd3#
        • 2.Qd5#
      • 1...Bc5!
  • Keys
    • 1.cxd4!
      • threat
        • 2.Sf6#
      • 1...Kd5
        • 2.Sf6#
      • 1...Bxd4
        • 2.c4#
      • 1...Sfxd4
        • 2.Qh1#
      • 1...Sexd4
        • 2.c3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • S(a);SBLOCK,XP(H)::S(J)
  • Tries
    • Try
      • B(K);CHECK
      • Refutation
        • P(h);XB(K)
    • Try
      • Q(A);CHECK
      • Refutation
        • S(a);XQ(A)
    • Try
      • Q(A);P_PINS(a)
      • Threat
        • QAB1(A),XS(a)
      • Vars
        • K(c);N_SPINP(b),S_FLIGHT::QAB(A),XS(a)
      • Refutation
        • S(g);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(f);P_PINP(H),XR(I)::S(J)
        • B(f);::S(J)
        • S(g);::S(J)
      • Refutation
        • B(f);
  • Actual
    • P(D);XP(b)
    • Threat
      • S(J)
    • Vars
      • K(c);P_SPINS(g),S_FLIGHT::S(J)
      • B(f);P_SPINB(f),SBLOCK,XP(D)::QAB(A)+P(B)
      • S(a);OGATEB,P_SPINS(a),XP(D)::QAB(A)
      • S(g);P_SPINS(g),XP(D)::QAB(A)+P(B)
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