MESON Chess Problem Database

Problem Display
PID: 61626 (4R2n/6N1/K2Rr3/1pP4p/p2Pk1b1/6Q1/2q2p1r/1N3BB1 w - - 0 1)

Neale, Harry R

Chess, 1943

4R2n/6N1/K2Rr3/1pP4p/p2Pk1b1/6Q1/2q2p1r/1N3BB1

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Sc3#
    • 1...Qb3
      • 2.Sd2#
    • 1...Qd3
      • 2.Bxd3#
    • 1...Qc1
      • 2.Bd3#
    • 1...Qa2
      • 2.Sc3#
      • 2.Bd3#
    • 1...Qb2
      • 2.Bd3#
    • 1...Qd2
      • 2.Sxd2#
    • 1...Qe2
      • 2.Sc3#
    • 1...Qc3
      • 2.Sxc3#
    • 1...Qc4
      • 2.Sd2#
    • 1...Qxc5
      • 2.Sd2#
      • 2.Bd3#
    • 1...Re5
      • 2.Rxe5#
    • 1...Bd1
      • 2.Rexe6#
    • 1...Be2
      • 2.Rexe6#
    • 1...Bf3
      • 2.Rexe6#
  • Tries
    • 1.Bg2+?
      • 1...Bf3
        • 2.Qxf3#
      • 1...Rxg2!
    • 1.Bxh2?
      • threat
        • 2.Qf4#
      • 1...Qc1
        • 2.Bd3#
        • 2.Qd3#
      • 1...Qd2
        • 2.Sxd2#
      • 1...Qe2
        • 2.Sc3#
      • 1...Be2
        • 2.Rexe6#
      • 1...Sg6!
    • 1.Rdxe6+?
      • 1...Kxd4
        • 2.Qe5#
        • 2.Qd6#
      • 1...Kd5
        • 2.Rd6#
        • 2.Rd8#
        • 2.Qe5#
        • 2.Qd6#
      • 1...Bxe6!
  • Keys
    • 1.Bxb5!
      • threat
        • 2.Bc6#
      • 1...Qxc5
        • 2.Sd2#
        • 2.Bd3#
      • 1...Bf3
        • 2.Rexe6#
      • 1...f1Q
        • 2.Qe3#
      • 1...f1B
        • 2.Qe3#
      • 1...Qb3
        • 2.Sd2#
      • 1...Qd3
        • 2.Bxd3#
      • 1...Qa2
        • 2.Sc3#
        • 2.Bd3#
      • 1...Qe2
        • 2.Sc3#
      • 1...Qc4
        • 2.Sd2#
      • 1...Be2
        • 2.Rexe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • Q(a);N_GUARD::S(A)
    • Q(a);N_GUARD::B(B),XQ(a)
    • Q(a);N_GUARD::B(B)
    • Q(a);N_GUARD::S(A),XQ(a)
    • R(i);N_PINR(H),OGATE::R1(J),XR(i)
    • B(f);N_GUARD::R(J),XR(i)
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • B(f);N_GUARD,P_SPINB(f)::QAB1(D),XB(f)
      • Refutation
        • R(c);XB(B)
    • Try
      • B(C);XR(c)
      • Threat
        • QAR1(D)
      • Vars
        • Q(a);N_GUARD::S(A),XQ(a)
        • Q(a);N_GUARD::S(A)
        • B(f);N_GUARD::R(J),XR(i)
      • Refutation
        • S(j);
    • Try
      • R(H);CHECK,N_SPINR(H),XR(i)
      • Refutation
        • B(f);P_SPINB(f),XR(H)
  • Actual
    • B(B);XP(g)
    • Threat
      • B(B)
    • Vars
      • B(f);N_GUARD::R(J),XR(i)
      • P(b);P_PINB(B)::QAR1(D)
      • Q(a);N_GUARD::S(A)
      • Q(a);N_GUARD,P_PINB(B)::B(B),XQ(a)
      • Q(a);N_GUARD,P_PINB(B)::S(A)
      • B(f);N_GUARD,P_PINB(B)::R(J),XR(i)
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