MESON Chess Problem Database

Problem Display
PID: 206350 (8/2Np4/2pP1Q2/2p1n3/R1n1k3/1N4p1/3P1pP1/5K2 w - - 0 1)

Toth, Gyula

Comm., Centurini/Guidelli MT, 1925

8/2Np4/2pP1Q2/2p1n3/R1n1k3/1N4p1/3P1pP1/5K2

#2

8 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Qf5#
    • 1...Sd3
      • 2.Rxc4#
    • 1...Sf3
      • 2.Sxc5#
    • 1...Sg4
      • 2.Sxc5#
    • 1...Sg6
      • 2.Sxc5#
    • 1...Sf7
      • 2.Sxc5#
  • Tries
    • 1.Rb4?
      • 1...Kd3
        • 2.Qf5#
      • 1...Sd3
        • 2.Rxc4#
      • 1...Sf3
        • 2.Sxc5#
      • 1...Sg4
        • 2.Sxc5#
      • 1...Sg6
        • 2.Sxc5#
      • 1...Sf7
        • 2.Sxc5#
      • 1...cxb4!
    • 1.Rxc4+?
      • 1...Sxc4
        • 2.Sxc5#
      • 1...Kd3!
    • 1.Qxe5+?
      • 1...Kd3
        • 2.Qf5#
      • 1...Kxe5!
    • 1.Qf4+?
      • 1...Kd3
        • 2.Qf5#
      • 1...Kxf4!
  • Keys
    • 1.Sc1!
      • 1...Kd4
        • 2.Qf4#
      • 1...Sd3
        • 2.Rxc4#
      • 1...Sf3
        • 2.gxf3#
      • 1...Sg4
        • 2.Rxc4#
      • 1...Sg6
        • 2.Rxc4#
      • 1...Sf7
        • 2.Rxc4#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 4
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(d);N_SPINS(c),S_FLIGHT::QAB(G)
    • S(f);N_GUARD,SBLOCK::R(E),XS(c)
    • S(f);::S(D),XP(e)
  • Tries
    • Try
      • R(E);
      • Vars
        • K(d);N_SPINS(c),S_FLIGHT::QAB(G)
        • S(f);N_GUARD,SBLOCK::R(E),XS(c)
        • S(f);::S(D),XP(e)
      • Refutation
        • P(e);N_SPINS(c),XR(E)
    • Try
      • R(E);CHECK,XS(c)
      • Vars
        • S(f);XR(E)::S(D),XP(e)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(G);CHECK,XS(f)
      • Vars
        • K(d);N_SPINS(c),S_FLIGHT::QAB(G)
      • Refutation
        • K(d);N_SPINS(c),P-FLIGHT,XQ(G)
    • Try
      • Q(G);CHECK
      • Vars
        • K(d);N_SPINS(c),S_FLIGHT::QAB(G)
      • Refutation
        • K(d);P-FLIGHT,XQ(G)
  • Actual
    • S(D);
    • Vars
      • K(d);P-FLIGHT::QAR2(G)
      • S(f);N_GUARD::R(E),XS(c)
      • S(f);OGATE::P(C),XS(f)
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