MESON Chess Problem Database

Problem Display
PID: 232936 (8/8/8/3n4/8/4N2Q/5k1K/6Rb w - - 0 1)

Grassano, Carlos A

Kudesnik, 2010

8/8/8/3n4/8/4N2Q/5k1K/6Rb

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sc2?
      • threat
        • 2.Qf1#
      • 1...Bg2
        • 2.Qxg2#
      • 1...Se3
        • 2.Qxe3#
      • 1...Ke2!
    • 1.Sxd5?
      • threat
        • 2.Qf1#
        • 2.Qe3#
      • 1...Ke2
        • 2.Qe3#
      • 1...Bg2
        • 2.Qxg2#
        • 2.Qe3#
      • 1...Bf3
        • 2.Qf1#
      • 1...Bxd5!
    • 1.Sf5?
      • threat
        • 2.Qf1#
      • 1...Bg2
        • 2.Qxg2#
      • 1...Se3
        • 2.Qxe3#
      • 1...Ke2!
    • 1.Re1?
      • threat
        • 2.Qf1#
        • 2.Qg3#
      • 1...Sxe3
        • 2.Qxe3#
        • 2.Qg3#
      • 1...Bg2
        • 2.Qg3#
      • 1...Kxe1!
    • 1.Rg2+?
      • 1...Ke1
        • 2.Qg3#
        • 2.Qh4#
      • 1...Bxg2!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Qf1#
      • 1...Ke2
        • 2.Qf1#
      • 1...Bg2
        • 2.Qxg2#
      • 1...Se3
        • 2.Qxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Threat
        • QAR1(D)
      • Vars
        • B(a);N_GUARD::QAR1(D),XB(a)
        • S(c);N_GUARD::QAB1(D),XS(c)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • S(C);XS(c)
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P-FLIGHT::QAR1(D)
        • B(a);SBLOCK::QAR1(D)
      • Refutation
        • B(a);XS(C)
    • Try
      • S(C);
      • Threat
        • QAR1(D)
      • Vars
        • B(a);N_GUARD::QAR1(D),XB(a)
        • S(c);N_GUARD::QAB1(D),XS(c)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::QAB1(D)
      • Refutation
        • K(b);S_FLIGHT,XR(A)
    • Try
      • R(A);CHECK
      • Refutation
        • B(a);XR(A)
  • Actual
    • S(C);
    • Threat
      • QAR1(D)
    • Vars
      • K(b);P-FLIGHT::QAB1(D)
      • B(a);N_GUARD::QAR1(D),XB(a)
      • S(c);N_GUARD::QAB1(D),XS(c)
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