MESON Chess Problem Database

Problem Display
PID: 221806 (2Rr4/2Q5/2p1NN2/KPp3P1/2kp4/R7/1Pp1Ppr1/8 w - - 0 1)

Uris, Miguel

ChessStar, 2020

2Rr4/2Q5/2p1NN2/KPp3P1/2kp4/R7/1Pp1Ppr1/8

#2

10 + 8

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...d3
      • 2.Rc3#
    • 1...cxb5
      • 2.Qxc5#
  • Tries
    • 1.Sxd8?
      • threat
        • 2.Qf7#
      • 1...d3
        • 2.Qf4#
      • 1...Rxg5!
    • 1.Qg3?
      • threat
        • 2.Ra4#
        • 2.Qb3#
        • 2.Qd3#
        • 2.b3#
      • 1...cxb5
        • 2.Rxc5#
        • 2.Qb3#
        • 2.Qd3#
        • 2.b3#
      • 1...c1S
        • 2.Ra4#
      • 1...d3
        • 2.Rc3#
      • 1...Rxg3!
    • 1.Qf4?
      • threat
        • 2.Rc3#
      • 1...c1Q
        • 2.Qxc1#
      • 1...c1R
        • 2.Qxc1#
      • 1...Rg3!
    • 1.Qxc6?
      • threat
        • 2.Qxc5#
      • 1...Rxc8
        • 2.Qd5#
      • 1...Rd5
        • 2.Qxd5#
      • 1...Rxg5!
    • 1.Qh7?
      • threat
        • 2.Qxc2#
        • 2.Qd3#
      • 1...c1Q
        • 2.Qd3#
      • 1...c1S
        • 2.Qc2#
      • 1...c1B
        • 2.Qc2#
        • 2.Qd3#
      • 1...c1R
        • 2.Qd3#
      • 1...d3
        • 2.Rc3#
      • 1...Rg3!
  • Keys
    • 1.Sxd4!
      • threat
        • 2.Ra4#
      • 1...Kxd4
        • 2.Qf4#
      • 1...Rxd4
        • 2.Rc3#
      • 1...cxd4
        • 2.Qxc6#
      • 1...cxb5
        • 2.Qxc5#

This is a version of 221808

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(e);N_GUARD::R1(C)
    • P(g);OGATE,P_SPINP(f),XP(E)::QAR1(I),XP(f)
  • Tries
    • Try
      • S(G);XR(h)
      • Threat
        • QAB(I)
      • Vars
        • P(e);OGATEB::QAR(I)
      • Refutation
        • R(c);XP(F)
    • Try
      • Q(I);
      • Threat
        • DUALS(4)
      • Vars
        • P(a);::R(C)
        • P(e);N_GUARD::R1(C)
      • Refutation
        • R(c);XQ(I)
    • Try
      • Q(I);P_PINP(e)
      • Threat
        • R1(C)
      • Vars
        • P(a);OGATEB::QAR(I),XQ(a)
        • P(a);OGATEB::QAR(I),XR(a)
      • Refutation
        • R(c);
    • Try
      • Q(I);P_PINP(f),XP(g)
      • Threat
        • QAR1(I),XP(f)
      • Vars
        • R(h);N_GUARD,XR(J)::QAB1(I)
        • R(h);N_GUARD::QAB1(I),XR(h)
      • Refutation
        • R(c);XP(F)
    • Try
      • Q(I);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);::QAB1(I)
        • P(a);::QAR2(I)
        • P(e);N_GUARD::R1(C)
      • Refutation
        • R(c);
  • Actual
    • S(G);XP(e)
    • Threat
      • R(C)
    • Vars
      • K(d);OGATEB,P-FLIGHT,XS(G)::QAR2(I)
      • R(h);SBLOCK,XS(G)::R1(C)
      • P(f);OGATEB,P_SPINP(g),SBLOCK,XS(G)::QAR2(I),XP(g)
      • P(g);OGATE,P_SPINP(f),XP(E)::QAR1(I),XP(f)
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