MESON Chess Problem Database

Problem Display
PID: 47644 (K2R1B2/1Qp5/p6q/7r/BpkP3p/5nNr/1P2P2p/3RbNnb w - - 0 1)

Levrier, Jean

Themes-64, 1957

K2R1B2/1Qp5/p6q/7r/BpkP3p/5nNr/1P2P2p/3RbNnb

#2

11 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Qe3
      • 2.Sxe3#
    • 1...Qg7
      • 2.Se3#
    • 1...Qxf8
      • 2.Se3#
    • 1...Qb6
      • 2.Se3#
    • 1...Qc6
      • 2.Se3#
    • 1...Qd6
      • 2.Se3#
    • 1...Qf6
      • 2.Se3#
    • 1...Qg6
      • 2.Se3#
    • 1...Qh7
      • 2.Se3#
    • 1...Qh8
      • 2.Se3#
    • 1...Rd5
      • 2.Qxd5#
    • 1...Rg5
      • 2.Se3#
    • 1...Bf2
      • 2.Qxb4#
    • 1...Bc3
      • 2.b3#
    • 1...Bxg3
      • 2.Qxb4#
    • 1...Sd2
      • 2.Rc1#
    • 1...Sxd4
      • 2.R1xd4#
      • 2.R8xd4#
    • 1...Sg5
      • 2.Se3#
    • 1...b3
      • 2.Bxb3#
      • 2.Qxb3#
  • Tries
    • 1.Rc1+?
      • 1...Bc3
        • 2.Qxb4#
        • 2.b3#
      • 1...Qxc1!
    • 1.Qxa6+?
      • 1...Rb5
        • 2.Qxb5#
      • 1...Qxa6+!
    • 1.Qc6+?
      • 1...Rc5
        • 2.Qxc5#
      • 1...Qxc6+!
    • 1.Qxc7+?
      • 1...Rc5
        • 2.Qxc5#
      • 1...Qc6+!
  • Keys
    • 1.Se4!
      • threat
        • 2.b3#
      • 1...Sxd4
        • 2.R1xd4#
        • 2.R8xd4#
      • 1...Qe3
        • 2.Sxe3#
      • 1...Sd2
        • 2.Qxb4#
      • 1...Se5
        • 2.Qd5#
      • 1...Sg5
        • 2.Qd5#
      • 1...b3
        • 2.Bxb3#
        • 2.Qxb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 14
  • Sets
    • Q(l);N_GUARD::S(B),XQ(l)
    • Q(l);N_GUARD::S(B)
    • Q(l);N_GUARD,P_PINR(J),XB(K)::S(B)
    • Q(l);N_GUARD,P_PINQ(H)::S(B)
    • R(j);N_GUARD::QAB1(H),XR(j)
    • R(j);S_CUTQ(l)::S(B)
    • B(a);N_GUARD::QAR1(H),XP(g)
    • B(a);SBLOCK::P(C)
    • B(a);N_GUARD,XS(E)::QAR1(H),XP(g)
    • S(e);P_PINQ(H),S_CUTB(a),S_CUTQ(l)::R(A)
    • S(e);P_PINQ(H),S_CUTQ(l)::S(B)
  • Tries
    • Try
      • R(A);CHECK
      • Refutation
        • Q(l);XR(A)
    • Try
      • Q(H);CHECK,XP(k)
      • Vars
        • R(j);N_GUARD,P_SPINR(j)::QAB1(H),XR(j)
      • Refutation
        • Q(l);CHECK,XQ(H)
    • Try
      • Q(H);CHECK
      • Vars
        • R(j);N_GUARD,P_SPINR(j)::QAR1(H),XR(j)
      • Refutation
        • Q(l);CHECK,XQ(H)
    • Try
      • Q(H);CHECK,XP(m)
      • Vars
        • R(j);N_GUARD,P_SPINR(j)::QAR1(H),XR(j)
      • Refutation
        • Q(l);CHECK,P_SPINQ(l)
  • Actual
    • S(E);
    • Threat
      • P(C)
    • Vars
      • Q(l);N_GUARD::S(B),XQ(l)
      • S(e);S_CUTB(a)::QAR1(H),XP(g)
      • S(e);S_CUTR(j)::QAB1(H)
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