MESON Chess Problem Database

Problem Display
PID: 219065 (1Rr5/4p3/3pK2n/4b1R1/2k3r1/2B5/8/3Q4 w - - 0 1)

Seymour, Robert Hoe

Baltimore American and Commercial Advertiser, 1882

1Rr5/4p3/3pK2n/4b1R1/2k3r1/2B5/8/3Q4

#2

5 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qd5#
    • 1...Bh2
      • 2.Rxc8#
    • 1...Bxc3
      • 2.Qd5#
    • 1...Bg3
      • 2.Rxc8#
    • 1...Bf4
      • 2.Rxc8#
      • 2.Qd4#
    • 1...Bf6
      • 2.Rxc8#
    • 1...Bg7
      • 2.Rxc8#
    • 1...Bh8
      • 2.Rxc8#
  • Tries
    • 1.Ba5?
      • threat
        • 2.Qd5#
      • 1...Kc5
        • 2.Qd5#
      • 1...Rd4
        • 2.Qc2#
      • 1...Bd4
        • 2.Qe2#
        • 2.Qb3#
        • 2.Qf1#
      • 1...d5
        • 2.Qxd5#
      • 1...Rc5!
    • 1.Rxg4+?
      • 1...Kxc3
        • 2.Rb3#
      • 1...Kc5
        • 2.Qd5#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Bf4
        • 2.Qd4#
      • 1...Sxg4!
    • 1.Rb4+?
      • 1...Kc5
        • 2.Qd5#
      • 1...Kxc3!
    • 1.Qe2+?
      • 1...Kc5
        • 2.Qb5#
      • 1...Kxc3!
    • 1.Qb3+?
      • 1...Kc5
        • 2.Rxc8#
        • 2.Qd5#
        • 2.Qb5#
      • 1...Kd3!
    • 1.Qf1+?
      • 1...Kc5
        • 2.Qb5#
      • 1...Kxc3!
    • 1.Qd3+?
      • 1...Kc5
        • 2.Qb5#
        • 2.Qd5#
      • 1...Kxd3!
  • Keys
    • 1.Be1!
      • threat
        • 2.Qd5#
      • 1...Kc5
        • 2.Qd5#
      • 1...Rd4
        • 2.Qc2#
      • 1...Rc5
        • 2.Rb4#
      • 1...Bd4
        • 2.Rb4#
        • 2.Qe2#
        • 2.Qb3#
      • 1...d5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • K(a);P-FLIGHT,P_SPINB(c)::QAR1(A)
    • B(c);::R(E),XR(g)
    • B(c);SBLOCK,XB(B)::QAB1(A)
  • Tries
    • Try
      • B(B);
      • Threat
        • QAB1(A)
      • Vars
        • K(a);P-FLIGHT,P_SPINB(c)::QAR1(A)
        • R(b);SBLOCK,S_CUTB(c)::QAR2(A)
        • P(d);::QAB1(A),XP(d)
      • Refutation
        • R(g);
    • Try
      • R(C);CHECK,XR(b)
      • Vars
        • K(a);P-FLIGHT,XB(B)::R1(E)
        • K(a);P-FLIGHT::QAR1(A)
        • B(c);N_GUARD,P_SPINB(c)::QAR1(A),XB(c)
        • B(c);N_GUARD,P_SPINB(c)::QAR1(A)
      • Refutation
        • S(e);XR(C)
    • Try
      • R(E);CHECK
      • Vars
        • K(a);P-FLIGHT,P_SPINB(c)::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT,XB(B)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT,P_SPINB(c)::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT,XB(B)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT,P_SPINB(c)::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT,XB(B)
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
  • Actual
    • B(B);
    • Threat
      • QAB1(A)
    • Vars
      • K(a);P-FLIGHT,P_SPINB(c)::QAR1(A)
      • R(b);SBLOCK,S_CUTB(c)::QAR2(A)
      • R(g);SBLOCK::R1(E)
      • P(d);::QAB1(A),XP(d)
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