MESON Chess Problem Database

Problem Display
PID: 223264 (8/8/5K2/1p6/2p1kp2/3R4/2Q5/N4bB1 w - - 0 1)

Taverner, Thomas

English Mechanic and World of Science, 1885

(First published on Fri Nov 27 1885)

8/8/5K2/1p6/2p1kp2/3R4/2Q5/N4bB1

#2

5 + 5

6490 yacpdb 2020
15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Be2
      • 2.Qxe2#
    • 1...Bg2
      • 2.Qe2#
    • 1...Bh3
      • 2.Qe2#
    • 1...cxd3
      • 2.Qc6#
    • 1...f3
      • 2.Rd4#
    • 1...b4
      • 2.Qxc4#
  • Tries
    • 1.Re3+?
      • 1...Kd4
        • 2.Re5#
      • 1...Kd5!
    • 1.Qg2+?
      • 1...Kxd3
        • 2.Qc2#
      • 1...f3
        • 2.Rd4#
        • 2.Qxf3#
      • 1...Bxg2!
    • 1.Qc3?
      • threat
        • 2.Rd4#
        • 2.Qd4#
      • 1...cxd3
        • 2.Qc6#
      • 1...Bxd3!
  • Keys
    • 1.Qa2!
      • 1...Kxd3
        • 2.Qc2#
      • 1...Bxd3
        • 2.Qa8#
      • 1...cxd3
        • 2.Qa8#
      • 1...f3
        • 2.Rd4#
      • 1...Be2
        • 2.Qxe2#
      • 1...Bg2
        • 2.Qe2#
      • 1...Bh3
        • 2.Qe2#
      • 1...c3
        • 2.Qd5#
      • 1...b4
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::QAR2(C),XB(a)
    • B(a);N_GUARD::QAR2(C)
    • P(b);OGATE,P_SPINP(b),SBLOCK,XR(D)::QAB(C)
    • P(d);SBLOCK::QAB(C)+R(D),DCHECK
    • P(e);N_GUARD::QAR2(C),XP(b)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • K(c);OGATE,P-FLIGHT::B(B)+R(D)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);OGATEB,S_FLIGHT,XR(D)::QAB1(C)
      • Refutation
        • B(a);XQ(C)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);OGATE,SBLOCK,XR(D)::QAB(C)
      • Refutation
        • B(a);XR(D)
  • Actual
    • Q(C);
    • Vars
      • K(c);OGATEB,S_FLIGHT,XR(D)::QAB1(C)
      • B(a);SBLOCK,XR(D)::QAB(C)
      • P(b);SBLOCK,XR(D)::QAB(C)
      • P(d);SBLOCK::R1(D)
      • B(a);N_GUARD::QAR2(C),XB(a)
      • B(a);N_GUARD::QAR2(C)
      • P(b);OGATE::QAB1(C)
      • P(e);N_GUARD::QAR2(C),XP(b)
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