MESON Chess Problem Database

Problem Display
PID: 275700 (8/3pp3/7n/pK2N1Qr/4k1bp/rn3N2/3RBR2/8 w - - 0 1)

de Bruyn, M

Probleemblad, 1953

8/3pp3/7n/pK2N1Qr/4k1bp/rn3N2/3RBR2/8

#2

7 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf3
      • 2.Bxf3#
    • 1...Sa1
      • 2.Rd4#
    • 1...Sc1
      • 2.Rd4#
    • 1...Sd4+
      • 2.Rxd4#
    • 1...Sc5
      • 2.Rd4#
    • 1...d5
      • 2.Bd3#
  • Tries
    • 1.Qe3+?
      • 1...Kf5
        • 2.Sd4#
      • 1...Kxe3!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Bd3#
      • 1...Rxg5+
        • 2.Sxg5#
      • 1...Sd4+
        • 2.Rxd4#
      • 1...Bxf3
        • 2.Bxf3#
      • 1...Sxd2
        • 2.Scxd2#
      • 1...Bf5
        • 2.Qe3#
      • 1...Sa1
        • 2.Rd4#
      • 1...Sc1
        • 2.Rd4#
      • 1...Sc5
        • 2.Rd4#
      • 1...Sf5
        • 2.Qxg4#
      • 1...e5
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • B(d);OGATE,XS(D)::B(B),XB(d)
    • S(b);N_GUARD::R1(A)
    • S(b);CHECK,N_GUARD::R1(A),XS(b)
    • P(i);SBLOCK::B(B)
  • Tries
    • Try
      • Q(G);CHECK,P_SPINS(F)
      • Vars
        • K(c);N_GUARD,N_PINS(F),S_FLIGHT::R(C)+S(D),DCHECK
      • Refutation
        • K(c);P-FLIGHT,XQ(G)
  • Actual
    • S(F);P_SPINQ(G)
    • Threat
      • B(B)
    • Vars
      • R(g);CHECK,XQ(G)::S(D),XR(g)
      • S(b);CHECK,N_GUARD::R1(A),XS(b)
      • B(d);OGATE,XS(D)::B(B),XB(d)
      • S(b);XR(A)::S(F),XS(b)
      • B(d);N_PINQ(G),SBLOCK::QAR1(G)
      • S(b);N_GUARD::R1(A)
      • S(b);N_GUARD,N_PINQ(G)::R1(A)
      • S(h);N_PINQ(G)::QAR2(G),XB(d)
      • P(j);N_GUARD,N_PINQ(G)::S(F)
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