MESON Chess Problem Database

Problem Display
PID: 239484 (5rq1/B2bQ3/1nPR4/1p2p1N1/1PkP4/K1p3br/4P3/5B2 w - - 0 1)

Groeneveld, Cornelis

Magyar Sakkelet, 1956

5rq1/B2bQ3/1nPR4/1p2p1N1/1PkP4/K1p3br/4P3/5B2

#2

10 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rf3
      • 2.exf3#
    • 1...Ra8
      • 2.e3#
      • 2.e4#
    • 1...Rb8
      • 2.e3#
      • 2.e4#
    • 1...Rc8
      • 2.e3#
      • 2.e4#
    • 1...Rd8
      • 2.e3#
      • 2.e4#
    • 1...Re8
      • 2.e3#
      • 2.e4#
    • 1...Bf2
      • 2.e3#
    • 1...Bf4
      • 2.e3#
    • 1...Bf5
      • 2.e4#
  • Tries
    • 1.Re6?
      • threat
        • 2.Qc5#
      • 1...Kxd4
        • 2.Qc5#
      • 1...Kd5
        • 2.Qc5#
      • 1...Sa4!
  • Keys
    • 1.Rf6!
      • threat
        • 2.Qc5#
      • 1...Kxd4
        • 2.Qc5#
      • 1...Kd5
        • 2.Qc5#
      • 1...Sa4
        • 2.e4#
      • 1...Qd5
        • 2.e3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • R(i);OGATE::B(A)+P(B),XR(i)
    • B(b);S_CUTR(i)::B(A)+P(B)
    • B(h);S_CUTR(i)::B(A)+P(B)
  • Tries
    • Try
      • R(H);
      • Threat
        • QAR1(J)
      • Vars
        • K(d);P-FLIGHT,P_SPINS(g),XP(E)::QAB1(J)
        • K(d);S_FLIGHT::QAR1(J)
      • Refutation
        • S(g);
  • Actual
    • R(H);
    • Threat
      • QAR1(J)
    • Vars
      • K(d);P-FLIGHT,P_SPINS(g),XP(E)::QAB1(J)
      • K(d);S_FLIGHT::QAR1(J)
      • S(g);::B(A)+P(B)
      • Q(j);SBLOCK::B(A)+P(B)
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