MESON Chess Problem Database

Problem Display
PID: 175437 (7B/6r1/1pR2R2/3k2P1/4NP1p/r2b1N1K/n4PB1/3Q4 w - - 0 1)

Riera y Rique, Pedro

Ruy Lopez, 1899

7B/6r1/1pR2R2/3k2P1/4NP1p/r2b1N1K/n4PB1/3Q4

#2

11 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ra5
      • 2.Qxd3#
    • 1...Ra6
      • 2.Qxd3#
    • 1...Raa7
      • 2.Qxd3#
    • 1...Ra8
      • 2.Qxd3#
    • 1...Sc3
      • 2.Qxd3#
  • Tries
    • 1.Se5?
      • threat
        • 2.Rcd6#
        • 2.Rfd6#
      • 1...Kd4
        • 2.Rcd6#
        • 2.Rfd6#
      • 1...Rg6
        • 2.Rcd6#
      • 1...Rd7!
    • 1.Sc3+?
      • 1...Sxc3
        • 2.Qxd3#
      • 1...Rxc3!
    • 1.Rc4?
      • threat
        • 2.Rd4#
      • 1...Ra4
        • 2.Qxd3#
      • 1...Kxc4!
    • 1.Rc5+?
      • 1...Kxe4
        • 2.Re5#
      • 1...bxc5!
    • 1.Rcd6+?
      • 1...Kxe4
        • 2.Se1#
        • 2.Sg1#
        • 2.Sd2#
        • 2.Sh2#
        • 2.Sd4#
        • 2.Sxh4#
        • 2.Se5#
        • 2.Rd4#
      • 1...Kc4!
    • 1.Qb3+?
      • 1...Kxe4
        • 2.Rce6#
        • 2.Qe6#
      • 1...Bc4
        • 2.Qxc4#
      • 1...Rxb3!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Rfd6#
      • 1...Bb1+
        • 2.Sc3#
      • 1...Bf1+
        • 2.Sc3#
      • 1...Bc2+
        • 2.Sc3#
      • 1...Be2+
        • 2.Sc3#
      • 1...Bc4+
        • 2.Sc3#
      • 1...Bxe4+
        • 2.Sb3#
      • 1...Bb5+
        • 2.Sc3#
      • 1...Ba6+
        • 2.Sc3#
      • 1...Kxd4
        • 2.Rfd6#
      • 1...Rg6
        • 2.Rf5#
      • 1...Rd7
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 5
  • Sets
    • R(b);N_GUARD::QAR2(A),XB(c)
    • S(a);S_CUTR(b)::QAR2(A),XB(c)
  • Tries
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Vars
        • R(g);::R1(I)
      • Refutation
        • R(g);
    • Try
      • S(F);CHECK
      • Vars
        • S(a);XS(F)::QAR2(A),XB(c)
      • Refutation
        • R(b);XS(F)
    • Try
      • R(I);
      • Threat
        • R1(I)
      • Vars
        • R(b);N_GUARD::QAR2(A),XB(c)
      • Refutation
        • K(e);N_SPINB(c),S_FLIGHT,XR(I)
    • Try
      • R(I);CHECK
      • Vars
        • K(e);N_SPINB(c),OGATE,S_FLIGHT,XS(F)::R1(I)
      • Refutation
        • P(f);XR(I)
    • Try
      • R(I);CHECK
      • Refutation
        • K(e);N_SPINB(c),S_FLIGHT
    • Try
      • Q(A);CHECK,N_PINB(c)
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::QAB1(A),XB(c)
      • Refutation
        • R(b);XQ(A)
  • Actual
    • S(D);N_PINB(c)
    • Threat
      • R1(J)
    • Vars
      • B(c);CHECK::B(C)+S(F),DCHECK
      • B(c);CHECK,P_PINB(C)::B(C)+S(F),DCHECK
      • B(c);CHECK,P_SPINB(c),XS(F)::QAR(A)+S(D)
      • K(e);P-FLIGHT,P_SPINB(c),XS(D)::R(J)
      • R(g);::R(J)
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Developed and maintained by Brian Stephenson.
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