MESON Chess Problem Database

Problem Display
PID: 187346 (3r3b/2r1R1nK/2R5/1P1k2p1/4N1Q1/4P3/1n1P4/qb3B2 w - - 0 1)

Groeneveld, Cornelis

Der Tagesspiegel (Berlin), 2001

(First published on Sun Jun 17 2001)

3r3b/2r1R1nK/2R5/1P1k2p1/4N1Q1/4P3/1n1P4/qb3B2

#2

9 + 9

16210 Problemschach-Jahrbuch (2001) 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Ra7
      • 2.Rc5#
    • 1...Rb7
      • 2.Rc5#
    • 1...Rcd7
      • 2.Rc5#
    • 1...Rxe7
      • 2.Rc5#
    • 1...Rd6
      • 2.Rxd6#
    • 1...Ra8
      • 2.Rd6#
    • 1...Rb8
      • 2.Rd6#
    • 1...Rc8
      • 2.Rd6#
    • 1...Re8
      • 2.Rd6#
    • 1...Rf8
      • 2.Rd6#
    • 1...Rg8
      • 2.Rd6#
    • 1...Ba2
      • 2.Sc3#
      • 2.Sf6#
    • 1...Bxe4+
      • 2.Qxe4#
    • 1...Sd1
      • 2.Bc4#
    • 1...Sa4
      • 2.Bc4#
    • 1...Sc4
      • 2.Bxc4#
    • 1...Sh5
      • 2.Qe6#
    • 1...Se6
      • 2.Qxe6#
    • 1...Se8
      • 2.Qe6#
  • Tries
    • 1.Rd7+?
      • 1...Ke5
        • 2.d4#
      • 1...Rcxd7
        • 2.Rc5#
      • 1...Rdxd7!
    • 1.Qd7+?
      • 1...Rcxd7
        • 2.Rc5#
      • 1...Rdxd7!
  • Keys
    • 1.d4!
      • threat
        • 2.Re5#
      • 1...Bxe4+
        • 2.Qxe4#
      • 1...Rxe7
        • 2.Rc5#
      • 1...Re8
        • 2.Rd6#
      • 1...Sd3
        • 2.Sf6#
      • 1...Sc4
        • 2.Bxc4#
      • 1...Sf5
        • 2.Sc3#
      • 1...Sh5
        • 2.Qe6#
      • 1...Se6
        • 2.Qxe6#
      • 1...Se8
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 11
  • Sets
    • R(f);N_GUARD::R1(G)
    • R(f);N_GUARD,XR(H)::R1(G)
    • R(h);N_GUARD::R1(G),XR(h)
    • R(h);N_GUARD::R1(G)
    • B(b);CHECK,OGATE,XS(D)::QAB1(E),XB(b)
    • S(c);N_GUARD::B(A)
    • S(c);N_GUARD::B(A),XS(c)
    • S(g);N_GUARD,P_PINR(H)::QAB1(E)
    • S(g);N_GUARD,P_PINR(H)::QAB1(E),XS(g)
  • Tries
    • Try
      • R(H);CHECK
      • Vars
        • K(d);P-FLIGHT::P(B)
        • R(f);XR(H)::R1(G)
      • Refutation
        • R(h);XR(H)
    • Try
      • Q(E);CHECK
      • Vars
        • R(f);XQ(E)::R1(G)
      • Refutation
        • R(h);XQ(E)
  • Actual
    • P(B);
    • Threat
      • R1(H)
    • Vars
      • B(b);CHECK,OGATE,XS(D)::QAB1(E),XB(b)
      • R(f);N_GUARD,XR(H)::R1(G)
      • R(h);N_GUARD::R1(G)
      • S(c);N_PINS(D)::S(D)
      • S(c);N_GUARD::B(A),XS(c)
      • S(g);N_PINS(D),P_PINR(H)::S(D)
      • S(g);N_GUARD,P_PINR(H)::QAB1(E)
      • S(g);N_GUARD,P_PINR(H)::QAB1(E),XS(g)
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