MESON Chess Problem Database

Problem Display
PID: 19468 (8/3rp3/B7/p3pN2/1R1Pk1Kp/2R5/Q5P1/3r2q1 w - - 0 1)

van Dijk, Nils Gustav Gerard

7th Place, The Hindu, 1955

8/3rp3/B7/p3pN2/1R1Pk1Kp/2R5/Q5P1/3r2q1

#2

8 + 8

3105 FIDE Album (1945-1955) 1964

SOLUTION

  • SOUND
  • Sets
    • 1...Qh2
      • 2.Re3#
    • 1...Qe3
      • 2.Rxe3#
    • 1...Qxd4
      • 2.Re3#
    • 1...Qf1
      • 2.Re3#
    • 1...Qh1
      • 2.Re3#
    • 1...Qxg2+
      • 2.Qxg2#
    • 1...Ra1
      • 2.Bd3#
    • 1...Rb1
      • 2.Bd3#
    • 1...Rc1
      • 2.Bd3#
    • 1...Re1
      • 2.Bd3#
    • 1...Rf1
      • 2.Bd3#
    • 1...Rd3
      • 2.Bxd3#
    • 1...R1xd4
      • 2.Bd3#
    • 1...R7xd4
      • 2.Bb7#
    • 1...Rb7
      • 2.Bxb7#
    • 1...h3
      • 2.Sg3#
    • 1...exd4
      • 2.Qe6#
  • Tries
    • 1.Bb7+?
      • 1...Rd5
        • 2.Bxd5#
        • 2.Qxd5#
      • 1...Rxb7!
    • 1.Qe2+?
      • 1...Kd5
        • 2.Qxe5#
      • 1...Qe3!
    • 1.d5+?
      • 1...Qd4
        • 2.Re3#
      • 1...Rd4
        • 2.Bd3#
      • 1...axb4!
  • Keys
    • 1.Rc5!
      • threat
        • 2.Rxe5#
      • 1...Qxg2+
        • 2.Qxg2#
      • 1...Qxd4
        • 2.Qe2#
      • 1...R1xd4
        • 2.Qc2#
      • 1...R7xd4
        • 2.Qd5#
      • 1...exd4
        • 2.Qe6#
      • 1...Qh2
        • 2.Qe2#
      • 1...Rd5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 1
    • REMOVED MATES = 11
  • Sets
    • Q(b);N_GUARD,N_PINP(B)::R1(C)
    • Q(b);N_GUARD,N_PINP(B)::R1(C),XQ(b)
    • Q(b);N_GUARD,N_PINP(B),P_SPINQ(b),XP(E)::R1(C)
    • Q(b);CHECK,OGATE,XP(B)::QAB(A),XQ(b)
    • R(a);N_GUARD::B(H)
    • R(a);N_GUARD::B(H),XR(a)
    • R(a);N_GUARD,P_SPINR(a),XP(E)::B(H)
    • R(g);N_GUARD,P_SPINR(g),XP(E)::B(H)
    • R(g);N_GUARD::B(H),XR(g)
    • P(d);N_GUARD::S(G)
    • P(f);OGATEB,P_SPINP(f),XP(E)::QAR2(A)
  • Tries
    • Try
      • B(H);CHECK
      • Refutation
        • R(g);XB(H)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::QAR1(A),XP(f)
      • Refutation
        • Q(b);N_PINP(B),P_SPINQ(b)
    • Try
      • P(E);CHECK
      • Vars
        • Q(b);N_PINP(B),P_SPINQ(b)::R1(C)
        • R(a);P_SPINR(a)::B(H)
      • Refutation
        • P(e);XR(D)
  • Actual
    • R(C);
    • Threat
      • R1(C),XP(f)
    • Vars
      • Q(b);CHECK,OGATE,XP(B)::QAB(A),XQ(b)
      • Q(b);N_GUARD,N_PINP(B),P_SPINQ(b),XP(E)::QAR2(A)
      • R(a);N_GUARD,P_SPINR(a),XP(E)::QAB(A)
      • R(g);N_GUARD,P_SPINR(g),XP(E)::QAB1(A)
      • P(f);OGATEB,P_SPINP(f),XP(E)::QAR2(A)
      • Q(b);N_GUARD,N_PINP(B)::QAR2(A)
      • R(g);N_GUARD::QAB1(A),XR(g)
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