MESON Chess Problem Database

Problem Display
PID: 99435 (r2r2b1/6Rn/n1pk2N1/BP1p1Bb1/5Ppq/4Q1P1/2P2N1P/R3K3 w Q - 0 1)

Verheye, Raymond

Magyar Sakkelet, 1983

r2r2b1/6Rn/n1pk2N1/BP1p1Bb1/5Ppq/4Q1P1/2P2N1P/R3K3

#2

13 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rd7
      • 2.Rxd7#
    • 1...Rb8
      • 2.Rd7#
    • 1...Rc8
      • 2.Rd7#
    • 1...Re8
      • 2.Rd7#
    • 1...Rf8
      • 2.Rd7#
    • 1...Sb4
      • 2.Bc7#
    • 1...Sc5
      • 2.Bc7#
      • 2.Qe5#
    • 1...Sc7
      • 2.Bxc7#
    • 1...Sb8
      • 2.Bc7#
    • 1...Sf6
      • 2.Qe7#
    • 1...d4
      • 2.Qe5#
    • 1...cxb5
      • 2.Qb6#
    • 1...c5
      • 2.Qe5#
  • Tries
    • 1.Bb4+?
      • 1...Sc5
        • 2.Bxc5#
        • 2.Qxc5#
        • 2.Qe5#
      • 1...c5
        • 2.Qe5#
      • 1...Sxb4!
    • 1.Rd1?
      • threat
        • 2.Se4#
      • 1...cxb5
        • 2.Qb6#
      • 1...d4
        • 2.Qe5#
      • 1...Re8
        • 2.Rd7#
      • 1...Sc5
        • 2.Bc7#
        • 2.Qe5#
      • 1...Sf6
        • 2.Qe7#
      • 1...Qxg3!
    • 1.Qc5+?
      • 1...Sxc5
        • 2.Bc7#
      • 1...Kxc5!
  • Keys
    • 1.0-0-0!
      • threat
        • 2.Se4#
      • 1...cxb5
        • 2.Qb6#
      • 1...d4
        • 2.Qe5#
      • 1...Re8
        • 2.Rd7#
      • 1...Sc5
        • 2.Bc7#
        • 2.Qe5#
      • 1...Sf6
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 8
  • Sets
    • R(j);N_GUARD::R1(M),XR(j)
    • R(j);N_GUARD::R1(M)
    • R(j);N_GUARD,P_PINQ(F)::R1(M)
    • S(e);N_GUARD::B(I)
    • S(e);N_GUARD::B(I),XS(e)
    • S(h);S_CUTB(d)::QAB1(F)
    • P(c);::QAB1(F)
    • P(f);OGATEB,XP(J)::QAR2(F)
    • P(f);SBLOCK::QAB1(F)
  • Tries
    • Try
      • B(I);CHECK
      • Vars
        • P(f);P_SPINP(f)::QAB1(F)
      • Refutation
        • S(e);XB(I)
    • Try
      • R(A);P_PINP(c)
      • Threat
        • S(D)
      • Vars
        • P(f);OGATEB,XP(J)::QAR2(F)
        • P(c);::QAB1(F)
        • R(j);N_GUARD,P_PINQ(F)::R1(M)
        • S(h);S_CUTB(d)::QAB1(F)
      • Refutation
        • Q(b);P_PINS(D),XP(G)
    • Try
      • Q(F);CHECK
      • Vars
        • S(e);SBLOCK,XQ(F)::B(I)
      • Refutation
        • K(g);S_FLIGHT,XQ(F)
  • Actual
    • K(B);0-0-0,P_PINP(c)
    • Threat
      • S(D)
    • Vars
      • P(f);OGATEB,XP(J)::QAR2(F)
      • P(c);::QAB1(F)
      • R(j);N_GUARD::R1(M)
      • S(h);S_CUTB(d)::QAB1(F)
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