MESON Chess Problem Database

Problem Display
PID: 224714 (8/8/2p2p2/2R2P2/3Pk3/2r2pP1/2P2p2/B2Q1N1K w - - 0 1)

Anonymous

The Sunny South, 1888

(First published on Sat Jun 30 1888)

8/8/2p2p2/2R2P2/3Pk3/2r2pP1/2P2p2/B2Q1N1K

#2

9 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc2
      • 2.Qxc2#
    • 1...Rd3
      • 2.Qxd3#
      • 2.cxd3#
    • 1...Re3
      • 2.Sd2#
    • 1...Rc4
      • 2.Qd3#
  • Tries
    • 1.Qe2+?
      • 1...Kxd4
        • 2.Qc4#
        • 2.Qe3#
      • 1...Re3
        • 2.Sd2#
        • 2.Qxe3#
      • 1...fxe2!
    • 1.Qc1?
      • threat
        • 2.Qf4#
      • 1...Kxd4
        • 2.Qe3#
      • 1...Rxc2
        • 2.Qe3#
        • 2.Qxc2#
      • 1...Re3
        • 2.Sd2#
        • 2.Qxe3#
      • 1...Rxc5!
    • 1.Qd2?
      • threat
        • 2.Qf4#
      • 1...Rxc2
        • 2.Qe3#
        • 2.Qxc2#
      • 1...Re3
        • 2.Qxe3#
      • 1...Rxc5!
  • Keys
    • 1.Qb1!
      • 1...Kxd4
        • 2.Qb4#
      • 1...Rxc2
        • 2.Qxc2#
      • 1...Rxc5
        • 2.c4#
      • 1...Ra3
        • 2.c3#
      • 1...Rb3
        • 2.cxb3#
      • 1...Rd3
        • 2.cxd3#
      • 1...Re3
        • 2.Sd2#
      • 1...Rc4
        • 2.c3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(b);OGATE,XP(E)::QAB(B),XR(b)
    • R(b);SBLOCK::S(C)
    • R(b);N_GUARD::QAB1(B)
  • Tries
    • Try
      • Q(B);CHECK
      • Refutation
        • P(c);XQ(B)
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • K(d);P-FLIGHT,P_SPINR(b),XP(G)::QAB1(B)
      • Refutation
        • R(b);XR(H)
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • R(b);N_GUARD::QAR1(B),XR(b)
      • Refutation
        • R(b);XR(H)
  • Actual
    • Q(B);
    • Vars
      • K(d);OGATEB,P-FLIGHT,P_SPINR(b),XP(G)::QAR2(B)
      • R(b);OGATE,P_SPINR(b),XP(E)::QAB(B),XR(b)
      • R(b);OGATE,XR(H)::QAB(B)+P(E)
      • R(b);OGATE::QAB(B)+P(E)
      • R(b);OGATE::QAB(B)+P(E),XR(b)
      • R(b);OGATE::P(E),XR(b)
      • R(b);SBLOCK::S(C)
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