MESON Chess Problem Database

Problem Display
PID: 57503 (3b4/2pr2n1/1Q3nK1/1P1R1P2/q3kNp1/2P3B1/1N1P1R2/4rb2 w - - 0 1)

Groeneveld, Cornelis

4th HM., Chess Life, 1955-1956

3b4/2pr2n1/1Q3nK1/1P1R1P2/q3kNp1/2P3B1/1N1P1R2/4rb2

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Qd4#
    • 1...Qc2
      • 2.Qd4#
    • 1...Qb3
      • 2.Qd4#
    • 1...Qxb5
      • 2.Qd4#
    • 1...Qa1
      • 2.Qd4#
    • 1...Qa2
      • 2.Qd4#
    • 1...Qa3
      • 2.Qd4#
    • 1...Qd4
      • 2.Qxd4#
    • 1...Qa5
      • 2.Qd4#
    • 1...Qa6
      • 2.Qd4#
    • 1...Qa8
      • 2.Qd4#
    • 1...Ra1
      • 2.Qe3#
    • 1...Rb1
      • 2.Qe3#
    • 1...Rc1
      • 2.Qe3#
    • 1...Rd1
      • 2.Qe3#
    • 1...Re2
      • 2.d3#
    • 1...Re3
      • 2.Qxe3#
    • 1...Be2
      • 2.Qe3#
    • 1...Bg2
      • 2.d3#
    • 1...Bh3
      • 2.d3#
    • 1...Bc4
      • 2.Qd4#
    • 1...Sxf5
      • 2.Qe6#
    • 1...Sh5
      • 2.Qe6#
    • 1...Se6
      • 2.Qxe6#
    • 1...Se8
      • 2.Qe6#
  • Tries
    • 1.Se2?
      • threat
        • 2.Re5#
      • 1...Kxd5
        • 2.Qc6#
      • 1...Qxb5
        • 2.Qd4#
      • 1...Rxd5
        • 2.Qe3#
      • 1...Sxd5
        • 2.d3#
      • 1...Qd4
        • 2.Qxd4#
      • 1...Re7!
    • 1.Sfd3?
      • threat
        • 2.Re5#
      • 1...Kxd5
        • 2.Qc6#
      • 1...Qxb5
        • 2.Qd4#
      • 1...Rxd5
        • 2.Rf4#
      • 1...Sxd5
        • 2.Sc5#
      • 1...Qd4
        • 2.Qxd4#
      • 1...Re7!
    • 1.Re2+?
      • 1...Kf3
        • 2.Qf2#
        • 2.Qe3#
      • 1...Bxe2
        • 2.Qe3#
      • 1...Rxe2!
  • Keys
    • 1.Se6!
      • threat
        • 2.Re5#
      • 1...Kxd5
        • 2.Qc6#
      • 1...Qxb5
        • 2.Qd4#
      • 1...Rxd5
        • 2.Sg5#
      • 1...Sxd5
        • 2.Sc5#
      • 1...Qd4
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 23
  • Sets
    • Q(c);N_GUARD::QAR1(J)
    • Q(c);N_GUARD,XP(G)::QAR1(J)
    • Q(c);N_GUARD::QAR1(J),XQ(c)
    • R(a);N_GUARD::QAR1(J)
    • R(a);S_CUTB(b)::P(B)
    • R(a);N_GUARD::QAR1(J),XR(a)
    • B(b);S_CUTR(a)::QAR1(J)
    • B(b);N_GUARD::P(B)
    • B(b);S_CUTQ(c)::QAR1(J)
    • S(i);N_GUARD,XP(I)::QAR2(J)
    • S(i);N_GUARD::QAR2(J)
    • S(i);N_GUARD::QAR2(J),XS(i)
  • Tries
    • Try
      • S(F);
      • Threat
        • R1(H)
      • Vars
        • K(d);OGATEB,S_FLIGHT,XR(H)::QAB1(J)
        • Q(c);N_GUARD,XP(G)::QAR1(J)
        • R(h);SBLOCK,XR(H)::QAR1(J)
        • S(f);SBLOCK,XR(H)::P(B)
        • Q(c);N_GUARD::QAR1(J),XQ(c)
      • Refutation
        • R(h);
    • Try
      • S(F);
      • Threat
        • R1(H)
      • Vars
        • K(d);OGATEB,S_FLIGHT,XR(H)::QAB1(J)
        • Q(c);N_GUARD,XP(G)::QAR1(J)
        • R(h);SBLOCK,XR(H)::R1(C)
        • S(f);SBLOCK,XR(H)::S(F)
        • Q(c);N_GUARD::QAR1(J),XQ(c)
      • Refutation
        • R(h);
    • Try
      • R(C);CHECK
      • Vars
        • B(b);XR(C)::QAR1(J)
      • Refutation
        • R(a);XR(C)
  • Actual
    • S(F);
    • Threat
      • R1(H)
    • Vars
      • K(d);OGATEB,S_FLIGHT,XR(H)::QAB1(J)
      • Q(c);N_GUARD,XP(G)::QAR1(J)
      • R(h);SBLOCK,XR(H)::S(F)
      • S(f);SBLOCK,XR(H)::S(F)
      • Q(c);N_GUARD::QAR1(J),XQ(c)
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