MESON Chess Problem Database

Problem Display
PID: 205115 (1R2B3/K2p4/5P2/p1kp4/q2N1Q2/1p1p4/1P1N4/8 w - - 0 1)

Wainwright, Joseph CJ

American Chess Bulletin, 1915

1R2B3/K2p4/5P2/p1kp4/q2N1Q2/1p1p4/1P1N4/8

#2

8 + 7

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qb5
      • 2.Rxb5#
    • 1...Qc6
      • 2.S4xb3#
    • 1...Qa1
      • 2.Rb5#
    • 1...Qa2
      • 2.Rb5#
    • 1...Qa3
      • 2.Rb5#
    • 1...Qb4
      • 2.Rc8#
    • 1...Qxd4
      • 2.Qc7#
    • 1...d6
      • 2.Se6#
  • Tries
    • 1.S2xb3+?
      • 1...Kc4
        • 2.Qc1#
      • 1...Qxb3!
    • 1.S4xb3+?
      • 1...Kc6
        • 2.Rb6#
      • 1...Qxb3!
    • 1.Sf5?
      • threat
        • 2.Qd6#
      • 1...Kc6
        • 2.Qd6#
      • 1...Qc6
        • 2.Sxb3#
        • 2.Qd4#
      • 1...d6
        • 2.Qxd6#
      • 1...Qxf4!
    • 1.Se6+?
      • 1...Kc6
        • 2.Rb6#
        • 2.Qc7#
      • 1...dxe6!
    • 1.Bxd7?
      • threat
        • 2.Se6#
      • 1...Qxd4
        • 2.Rb5#
        • 2.Qc7#
      • 1...Qc6
        • 2.S4xb3#
      • 1...Qxd7+!
    • 1.Rb7?
      • 1...Qxd4
        • 2.Qc7#
      • 1...Qb5
        • 2.Rxb5#
      • 1...Qc6
        • 2.S4xb3#
      • 1...Qa1
        • 2.Rb5#
      • 1...Qa2
        • 2.Rb5#
      • 1...Qa3
        • 2.Rb5#
      • 1...Qb4
        • 2.Rc7#
      • 1...d6
        • 2.Se6#
      • 1...Qc4!
    • 1.Rc8+?
      • 1...Kb4
        • 2.Qd6#
      • 1...Qc6!
    • 1.Qc7+?
      • 1...Qc6
        • 2.S4xb3#
      • 1...Kxd4!
    • 1.f7?
      • 1...Qxd4
        • 2.Qc7#
      • 1...Qb5
        • 2.Rxb5#
      • 1...Qc6
        • 2.S4xb3#
      • 1...Qa1
        • 2.Rb5#
      • 1...Qa2
        • 2.Rb5#
      • 1...Qa3
        • 2.Rb5#
      • 1...Qb4
        • 2.Rc8#
      • 1...d6
        • 2.Se6#
      • 1...Qc4!
  • Keys
    • 1.Qe5!
      • 1...Qxd4
        • 2.Qc7#
      • 1...Qb5
        • 2.Rxb5#
      • 1...Qc4
        • 2.Se4#
      • 1...Qc6
        • 2.S4xb3#
      • 1...Qa1
        • 2.Rb5#
      • 1...Qa2
        • 2.Rb5#
      • 1...Qa3
        • 2.Rb5#
      • 1...Qb4
        • 2.Rc8#
      • 1...d6
        • 2.Se6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(c);N_GUARD::R1(G),XQ(c)
    • Q(c);N_GUARD,SBLOCK::S(C),XP(a)
    • Q(c);N_GUARD::R1(G)
    • Q(c);N_GUARD,SBLOCK::R(G)
    • Q(c);N_GUARD,SBLOCK,XS(C)::QAR2(D)
    • P(g);N_GUARD::S(C)
  • Tries
    • Try
      • S(B);CHECK,XP(a)
      • Vars
        • K(e);P-FLIGHT::QAR(D)
      • Refutation
        • Q(c);XS(B)
    • Try
      • S(C);CHECK,XP(a)
      • Vars
        • K(e);P-FLIGHT,P_SPINP(g)::R1(G)
      • Refutation
        • Q(c);XS(C)
    • Try
      • S(C);
      • Threat
        • QAB1(D)
      • Vars
        • K(e);P-FLIGHT,P_SPINP(g)::QAR1(D)
        • P(g);::QAB1(D),XP(g)
      • Refutation
        • Q(c);XQ(D)
    • Try
      • S(C);CHECK
      • Refutation
        • P(g);XS(C)
    • Try
      • B(H);XP(g)
      • Threat
        • S(C)
      • Vars
        • Q(c);N_GUARD::S(C),XP(a)
      • Refutation
        • Q(c);CHECK,XB(H)
    • Try
      • R(G);
      • Vars
        • Q(c);N_GUARD,SBLOCK,XS(C)::QAR2(D)
        • Q(c);N_GUARD::R1(G),XQ(c)
        • Q(c);N_GUARD,SBLOCK::S(C),XP(a)
        • Q(c);N_GUARD::R1(G)
        • Q(c);N_GUARD,SBLOCK::R(G)
        • P(g);N_GUARD::S(C)
      • Refutation
        • Q(c);
    • Try
      • R(G);CHECK
      • Vars
        • K(e);S_FLIGHT::QAB(D)
      • Refutation
        • Q(c);P_SPINQ(c)
    • Try
      • Q(D);CHECK
      • Vars
        • Q(c);P_SPINQ(c)::S(C),XP(a)
      • Refutation
        • K(e);S_FLIGHT,XS(C)
    • Try
      • P(E);
      • Vars
        • Q(c);N_GUARD,SBLOCK,XS(C)::QAR2(D)
        • Q(c);N_GUARD::R1(G),XQ(c)
        • Q(c);N_GUARD,SBLOCK::S(C),XP(a)
        • Q(c);N_GUARD::R1(G)
        • Q(c);N_GUARD,SBLOCK::R(G)
        • P(g);N_GUARD::S(C)
      • Refutation
        • Q(c);
  • Actual
    • Q(D);P_PINP(f)
    • Vars
      • Q(c);N_GUARD,SBLOCK,XS(C)::QAR2(D)
      • Q(c);N_GUARD::R1(G),XQ(c)
      • Q(c);SBLOCK::S(B)
      • Q(c);N_GUARD,SBLOCK::S(C),XP(a)
      • Q(c);N_GUARD::R1(G)
      • Q(c);N_GUARD,SBLOCK::R(G)
      • P(g);N_GUARD::S(C)
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