MESON Chess Problem Database

Problem Display
PID: 270255 (2rb1B2/1Q2p3/1p1N1R2/N1k5/4R2K/Pp1p1P2/bnP2p2/5B1n w - - 0 1)

Ouellet, Charles

Probleemblad, 2021

2rb1B2/1Q2p3/1p1N1R2/N1k5/4R2K/Pp1p1P2/bnP2p2/5B1n

#2

11 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rc6
      • 2.Qxc6#
    • 1...Ra8
      • 2.Qc6#
    • 1...Rb8
      • 2.Qc6#
    • 1...Bb1
      • 2.Sxb3#
    • 1...Bc7
      • 2.Qc6#
    • 1...Sd1
      • 2.Rc4#
    • 1...Sa4
      • 2.Rc4#
    • 1...Sc4
      • 2.Rxc4#
    • 1...bxa5
      • 2.Qb5#
    • 1...b5
      • 2.Qxb5#
  • Tries
    • 1.Sxc8?
      • threat
        • 2.Rf5#
        • 2.Qc6#
      • 1...bxc2
        • 2.Qc6#
      • 1...Bc7
        • 2.Qc6#
      • 1...Sg3
        • 2.Qc6#
      • 1...Sc4
        • 2.Qc6#
      • 1...Kb5!
    • 1.Rb4?
      • threat
        • 2.Se4#
      • 1...exd6
        • 2.Bxd6#
      • 1...Rc6
        • 2.Qxc6#
      • 1...Sc4
        • 2.Rxc4#
      • 1...Sg3!
    • 1.Rf5+?
      • 1...Kxd6
        • 2.Rd5#
      • 1...e5+!
    • 1.Qxc8+?
      • 1...Kd5
        • 2.Qc6#
      • 1...Bc7!
    • 1.cxb3?
      • threat
        • 2.b4#
      • 1...Bxb3
        • 2.Sxb3#
      • 1...bxa5
        • 2.Qb5#
      • 1...Rc6
        • 2.Qxc6#
      • 1...exd6!
    • 1.cxd3?
      • threat
        • 2.d4#
      • 1...Sxd3
        • 2.Rc4#
      • 1...Rc6
        • 2.Qxc6#
      • 1...e5!
    • 1.c3?
      • threat
        • 2.Re5#
      • 1...Sc4
        • 2.Rxc4#
      • 1...e5
        • 2.Rxe5#
      • 1...exf6!
    • 1.c4?
      • threat
        • 2.Qd5#
      • 1...Sxc4
        • 2.Rxc4#
      • 1...bxa5
        • 2.Qb5#
      • 1...Rc6
        • 2.Qxc6#
      • 1...b5
        • 2.Qxb5#
      • 1...e6!
  • Keys
    • 1.Qd7!
      • threat
        • 2.Sdb7#
        • 2.Qb5#
      • 1...Kd5
        • 2.Sdb7#
      • 1...exd6
        • 2.Qf5#
      • 1...b5
        • 2.Sdb7#
        • 2.Qxb5#
      • 1...Rc6
        • 2.Qxc6#
      • 1...Rc7
        • 2.Qb5#
      • 1...Rb8
        • 2.Qb5#
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • R(j);N_GUARD::QAR1(J),XR(j)
    • R(j);N_GUARD::QAR1(J)
    • B(b);N_GUARD::S(G),XP(e)
    • B(k);S_CUTR(j)::QAR1(J)
    • S(c);N_GUARD::R1(E)
    • S(c);N_GUARD::R1(E),XS(c)
    • P(h);OGATE,XS(G)::QAR1(J)
    • P(h);OGATE::QAR1(J),XP(h)
  • Tries
    • Try
      • S(H);P_PINP(i),XR(j)
      • Threat
        • DUALS(2)
      • Vars
        • P(e);XP(B)::QAR1(J)
        • B(k);::QAR1(J)
        • S(a);::QAR1(J)
        • S(c);::QAR1(J)
      • Refutation
        • K(g);N_SPINP(i),P-FLIGHT,P_SPINP(f)
    • Try
      • R(E);
      • Threat
        • S(H)
      • Vars
        • P(i);OGATE,P_PINR(I),P_SPINP(i),XS(H)::B(K),XP(i)
        • R(j);N_GUARD::QAR1(J),XR(j)
        • S(c);N_GUARD::R1(E),XS(c)
      • Refutation
        • S(a);
    • Try
      • R(I);CHECK
      • Vars
        • K(g);P_SPINP(i),S_FLIGHT,XS(H)::R1(I)
      • Refutation
        • P(i);CHECK,P_SPINP(i)
    • Try
      • Q(J);CHECK,XR(j)
      • Vars
        • K(g);P-FLIGHT::QAB1(J)
      • Refutation
        • B(k);P_SPINB(k)
    • Try
      • P(B);XP(e)
      • Threat
        • P(B)
      • Vars
        • B(b);XP(B)::S(G),XB(b)
        • P(h);OGATE,XS(G)::QAR1(J)
        • R(j);N_GUARD::QAR1(J),XR(j)
      • Refutation
        • P(i);P_PINR(I),P_SPINP(i),XS(H)
    • Try
      • P(B);XP(f)
      • Threat
        • P(B)
      • Vars
        • S(c);N_GUARD,XP(B)::R1(E)
        • R(j);N_GUARD::QAR1(J),XR(j)
      • Refutation
        • P(i);P_PINR(I)
    • Try
      • P(B);
      • Threat
        • R(E)
      • Vars
        • S(c);N_GUARD::R1(E),XS(c)
        • P(i);P_PINR(I)::R(E),XP(i)
      • Refutation
        • P(i);XR(I)
    • Try
      • P(B);
      • Threat
        • QAR1(J)
      • Vars
        • S(c);OGATE,XP(B)::R1(E),XS(c)
        • P(h);OGATE,XS(G)::QAR1(J)
        • R(j);N_GUARD::QAR1(J),XR(j)
        • P(h);OGATE::QAR1(J),XP(h)
      • Refutation
        • P(i);P_PINR(I)
  • Actual
    • Q(J);
    • Threat
      • DUALS(2)
    • Vars
      • K(g);P-FLIGHT::QAR(J)+S(H)
      • P(i);N_GUARD,P_PINR(I),P_SPINP(i),XS(H)::QAR(J)
      • R(j);N_GUARD::QAR1(J),XR(j)
      • R(j);::QAR1(J)
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