MESON Chess Problem Database

Problem Display
PID: 232728 (8/3Nr2b/K2N3b/pPRp2n1/3k1B2/Q7/1P1n4/2rq4 w - - 0 1)

Groeneveld, Cornelis

Freie Presse, 2004

8/3Nr2b/K2N3b/pPRp2n1/3k1B2/Q7/1P1n4/2rq4

#2

8 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Qc3#
    • 1...Rb1
      • 2.Qc3#
    • 1...Rc3
      • 2.Qxc3#
    • 1...Re3
      • 2.Bxe3#
      • 2.Qxe3#
    • 1...Re5
      • 2.Bxe5#
    • 1...Rxd7
      • 2.Qe3#
    • 1...Rf7
      • 2.Be3#
      • 2.Be5#
      • 2.Qe3#
    • 1...Rg7
      • 2.Be3#
      • 2.Be5#
      • 2.Qe3#
    • 1...Bc2
      • 2.Qc3#
    • 1...Be4
      • 2.Be3#
      • 2.Qe3#
    • 1...Sde4
      • 2.Be3#
      • 2.Qe3#
    • 1...Sge4
      • 2.Qe3#
    • 1...Se6
      • 2.Be5#
      • 2.Qe3#
  • Keys
    • 1.Rc3!
      • threat
        • 2.Qc5#
      • 1...Rxc3
        • 2.Qxc3#
      • 1...Sb3
        • 2.Qa4#
      • 1...Sde4
        • 2.Be3#
      • 1...Sge4
        • 2.Rd3#
      • 1...Se6
        • 2.Be5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(a);N_GUARD::QAB1(B)
    • R(a);N_GUARD::QAB1(B),XR(a)
    • R(i);N_GUARD::B(C),XR(i)
    • R(i);N_GUARD,XS(H)::QAB1(B)
    • B(j);S_CUTR(a)::QAB1(B)
    • S(g);S_CUTR(i)::QAB1(B)
  • Actual
    • R(E);
    • Threat
      • QAB1(B)
    • Vars
      • R(a);OGATE,XR(E)::QAB1(B),XR(a)
      • S(c);N_GUARD,S_CUTQ(b)::QAR(B)
      • S(c);S_CUTR(i)::B(C)
      • S(g);S_CUTB(j)::R1(E)
      • S(g);S_CUTR(i)::B(C)
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