MESON Chess Problem Database

Problem Display
PID: 103267 (8/5B2/KBpp3R/3N4/2k5/2p3r1/2Q1b1N1/8 w - - 0 1)

Palmeira Martins, F

A Gazeta, 1932

8/5B2/KBpp3R/3N4/2k5/2p3r1/2Q1b1N1/8

#2

7 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxg2
      • 2.Qxc3#
    • 1...Rd3
      • 2.Qa4#
      • 2.Qa2#
    • 1...Re3
      • 2.Sgxe3#
    • 1...Rg4
      • 2.Sge3#
      • 2.Qxc3#
    • 1...Rg5
      • 2.Sge3#
      • 2.Qxc3#
    • 1...Rg6
      • 2.Sge3#
      • 2.Qxc3#
    • 1...Rg7
      • 2.Sge3#
      • 2.Qxc3#
    • 1...Rg8
      • 2.Sge3#
      • 2.Qxc3#
    • 1...Bd3
      • 2.Qa4#
      • 2.Qa2#
      • 2.Qxc3#
    • 1...Bf3
      • 2.Sge3#
      • 2.Qxc3#
  • Tries
    • 1.Se1?
      • threat
        • 2.Qa4#
        • 2.Qa2#
      • 1...cxd5
        • 2.Qa4#
      • 1...c5
        • 2.Qa4#
      • 1...Bd1!
    • 1.Sgf4?
      • threat
        • 2.Qa4#
        • 2.Qa2#
      • 1...cxd5
        • 2.Qa4#
      • 1...c5
        • 2.Qa4#
      • 1...Bd1!
    • 1.Sdf4+?
      • 1...d5
        • 2.Qa4#
      • 1...Kb4+!
    • 1.Rh4+?
      • 1...Rg4
        • 2.Sge3#
        • 2.Qxc3#
      • 1...Bg4!
    • 1.Rf6?
      • threat
        • 2.Rf4#
      • 1...Rd3
        • 2.Qa4#
        • 2.Qa2#
      • 1...Re3
        • 2.Sgxe3#
      • 1...Rg4
        • 2.Sge3#
        • 2.Qxc3#
      • 1...Bd3
        • 2.Qa4#
        • 2.Qa2#
        • 2.Qxc3#
      • 1...Bf3
        • 2.Sge3#
        • 2.Qxc3#
      • 1...Rf3!
    • 1.Qxe2+?
      • 1...Rd3
        • 2.Qa2#
      • 1...Kb3!
  • Keys
    • 1.Re6!
      • threat
        • 2.Re4#
      • 1...Kxd5+
        • 2.Rxe2#
      • 1...Rd3
        • 2.Qa2#
      • 1...Re3
        • 2.Sgxe3#
      • 1...Rg4
        • 2.Sge3#
      • 1...Bd3
        • 2.Qa2#
      • 1...Bf3
        • 2.Sge3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • R(c);N_GUARD,XS(B)::QAR1(A),XP(b)
    • R(c);N_GUARD::S(B),XR(c)
  • Tries
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(e);XS(C)::QAR2(A)
        • P(e);::QAR2(A)
      • Refutation
        • B(a);
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(e);XS(C)::QAR2(A)
        • P(e);::QAR2(A)
      • Refutation
        • B(a);
    • Try
      • S(C);CHECK
      • Vars
        • P(f);::QAR2(A)
      • Refutation
        • K(d);CHECK,N_SPINP(b),P-FLIGHT
    • Try
      • R(F);CHECK
      • Refutation
        • B(a);P_SPINB(a)
    • Try
      • R(F);
      • Threat
        • R(F)
      • Vars
        • R(c);N_GUARD::S(B),XR(c)
      • Refutation
        • R(c);
    • Try
      • Q(A);CHECK,N_PINP(b),XB(a)
      • Vars
        • R(c);P_SPINR(c),SBLOCK::QAB(A)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • R(F);
    • Threat
      • R(F)
    • Vars
      • K(d);CHECK,N_SPINP(b),OGATEB,S_FLIGHT,XS(C)::B(G)+R(F),XB(a)
      • R(c);SBLOCK::QAB(A)
      • R(c);N_GUARD::S(B),XR(c)
      • R(c);N_GUARD::S(B)
      • B(a);SBLOCK::QAB(A)
      • B(a);S_CUTR(c)::S(B)
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